P: Arrow keys no longer advance to next photo in filmstrip in Develop

Add "choose a profile" to the list of interacttion that steal focus and cause arrow navigation to stop working. So infuriating. 

@Chris C.3857460369kg: "this might just be the dumbest thing Adobe has ever done if true."

The arrow keys have always worked to move to the next/previous photos in the filmstrip, but the limitations I described above, where activation of certain controls in Develop "stole" left- and right-arrow, have also always been present for many, many years, perhaps since LR 1. Cmd/Ctrl Left/Right Arrow has always been the only way to avoid such "stealing" of focus.

LR 13.5 introduced a another situation in which left- and right-arrow stopped moving along the filmstrip:  Typing + on the numeric keypad to adjust the Exposure slider (similar to how left- and right-arrow stop working after adjusting a Develop slider with the mouse).

Many people complained here about this change of behavior, and Adobe quickly released 13.5.1, reverting to how left- and right-arrow behaved prior to 13.5.  

Since 13.5.1, there have been just a few reports about issues with left- and right-arrow, but it isn't clear whether they were the caused by the same conditions as this bug report (typing + on the numeric keypad) or were in fact just observing the years-long behavior of some Develop controls stealing left- and right arrow.

Adobe will only pay attention to most bug reports if they are given a precise recipe that lets them reproduce the issue easily (as in this bug report) or if many, many people complain (also as in this bug report). So if you can, pay closer attention when left- and right arrow stop working for you and see if it's caused by one of the known conditions. 

"The bottom line is the official keyboard shortcut for Select Next Photo and Select Previous Photo is Ctrl/Cmd Right Arrow and Ctrl/Cmd Left Arrow."

As someone who has used LR heavily for 20 years, this the first time I have experienced this, and this might just be the dumbest thing Adobe has ever done if true. I process hundreds of photos everyday. I've done this for years. Only in the past couple months has this become an issue. Without sitting down in front of it testing, my guess it is generative fill module that is causing the problem.  I'll look closer at it this afternoon when processing today's shoots. This idea that a modifier is a viable option when working in volume like that is just unreasonable.

@Chris C.3857460369kg 

The bottom line is the official keyboard shortcut for Select Next Photo and Select Previous Photo is Ctrl/Cmd Right Arrow and Ctrl/Cmd Left Arrow. Although Left and Right Arrow work in a lot of instances, as @johnrellis explained, it depends on the current state of LrC.

@Chris C.3857460369kg: "randomly the arrow keys stop advancing the photos... Switching between Develop and Library and back to Develop seems to clear it as well."

Note that there have always been situations in which other controls in Develop steal the focus for left and right arrow:

- On Windows, but not Mac, if you adjust a slider with the mouse, then left and right arrow will move the slider.

- If the Crop tool is open, left and right arrow will nudge the crop.

- If the Remove tool is open, it always intercepts left and right arrow, moving the current selection if one is selected.

- If the Mask tool is open and a mask or mask component is selected, it intercepts left and right arrow.

Is it possible that one of these situations is what you're observing at least some of the time? Switching to Library and back to Develop would clear these conditions.

This problem persists... not sure exactly what triggers it, sometimes it's after round-tripping from Photoshop, but randomly the arrow keys stop advancing the photos which while not the end of the world, it does become quite annoying when processing hundreds of photos everyday. Switching between Develop and Library and back to Develop seems to clear it as well. Better than a full restart, but still annoying. I'm on a MBP and LRC 14.2

Using LR Classic 14.1.1 on MacBook Pro 15.1.1 with 64 GB sometime in the last couple of updates I noticed two things.

First, the right arrow wouldn't advance in Develop module and oftentimes, the image had not been updated from the pruor edits.

Once I went back to Library and advanced the images, often the edit history would not be applied or there was a noticeable lag - the original raw image displaying and then the edits would be applied.  A good percentage of the time, I would have to go back and click on the history to update the image in the Develop module.

Once the edits were applied from the history, the right and left arrows worked in the develop module.

It may be that the R & L arrow problem in the Develop module is due to a disconnect in finding and applying the edit history.

"I'm also experiencing the issue, it seems to happen randomly when I'm in develop module (windows or mac)."

If you can figure out how to reproduce the problem reliably, that will make it much more likely Adobe will pay attention.

Note that there have always been situations in which other controls in Develop steal the focus for left and right arrow:

- On Windows, but not Mac, if you adjust a slider with the mouse, then left and right arrow will move the slider.

- If the Crop tool is open, left and right arrow will nudge the crop.

- If the Remove tool is open, it always intercepts left and right arrow, moving the current selection if one is selected.

- If the Mask tool is open and a mask or mask component is selected, it intercepts left and right arrow.

Is it possible that one of these situations is what you're observing at least some of the time?

Yes, I still see the problem below in 14.1.1.

In addition to your workaround, I’ve noticed that it seems to be related to a loss of proper window focus. Because when it happens to me, to get it to work again I do one of the following workarounds that puts keyboard focus back on the main Lightroom Classic application window: 

Click in the main application window. 

or

Switch to another application, and back to Lightroom Classic. (I use the Mac shortcut Command-Tab to quickly switch out and back into the application.)

I say “main application window” partly because I’ve noticed that the problem reliably happens after I open the Secondary Window, which I use all the time. Immediately after doing that, main window shortcuts stop working, so I have to restore focus to the main application window to get the shortcuts to work again.

The above information is mostly for Adobe, in case it helps isolate what is causing this. It almost seems like the problem started after Adobe did some recoding to get HDR to work in non-Develop views in a recent release, so I wonder if that broke something with window focus.

I'm also experiencing the issue, it seems to happen randomly when I'm in develop module (windows or mac).
After hitting < (the - on french azerty keyboard to lower the current setting) the left/right arrows works again. This is extremely frustrating.
Currently using LR v14.1.1 on a mac. So no, this issue has not been fixed in 13.5.1.

By @philoops

I'm also experiencing the issue, it seems to happen randomly when I'm in develop module (windows or mac). 

After hitting < (the - on french azerty keyboard to lower the current setting) the left/right arrows works again. This is extremely frustrating. 

Currently using LR v14.1.1 on a mac. So no, this issue has not been fixed in 13.5.1.