Clicking in the Filmstrip selects wrong photo

[gostefan]

System

LRClassic 14.1.1
Camera Raw 17.1

Installation on SSD, Library on HD (~67k Images)

Windows 11 Home, 24H2

AMD Ryzen 5950X

NVidia RTX 3070 8GB (Driver 560.94)

64GB RAM

Problem

From my phone I have every picture twice - as JPG and as DNG (which is what I want). I'm currently working in a folder with ~300 pictures.

In the filmstrip they are arranged by time taken - which means that every picture occurs twice and then the next picture comes up.

Now I want to assemble some of these pictures into a panorama. For that I want to select only the JPG (and later only the DNG) pictures. I do this manually by Ctrl + Clicking on each picture.

But sometimes instead of selecting the correct image the next image over is selected (or even the one after that).

My hypothesis is that the click-event is not correctly associated with the cursor position but rather the position is only taken from the cursor when the click is processed. But when selecting every second image the mouse moves considerably over time. Therefore a delay of only a fraction of a second leads to the wrong image being selected.

I made sure that both the mouse down and up events happen over the image I want to select. Neither of the events happened on the image Lightroom Classic actually selected.

This only happens while a previous panorarma is getting assembled - increasing the general system load. (There are quite a few programs open but at least 30% of the RAM still available and the CPU is only about 12% used - probably 8 cores used for assembling the panorama.)

As with threading bugs I also cannot reproduce this consistently.

[Rob_Cullen]

I don't have an answer to the mouse cursor skipping over images, but-

You could make things easier by setting a search filter for 'File-type' and so you can view only JPGs, or only raws.

Then a [Click] > [Shift Click] would select a row of contiguous images.

[johnrellis]

"But sometimes instead of selecting the correct image the next image over is selected (or even the one after that)."

Over the years, there have been some other reports of similar symptoms, and for at least some of them, resetting preferences fixed the issue:

https://www.lightroomqueen.com/articles-page/how-do-i-reset-lightrooms-preferences/

LR sometimes soils its preferences file, and resetting it can fix all sorts of wonky behavior. That article explains how to restore the old preferences if resetting doesn't help.