Amount slider in Masking breaks when moving too fast

[DiodorS]

Amount slider in Masking doesn't update the picture when moving too fast, while holding down left mouse button.

Windows 10, x64, ACR 16.2.1.1767 / PHSP 25.6.0 20240312.r.433 2bfcbf1 x64

Resetting the Camera Raw preferences made no difference.

I was able to reproduce this issue on a different Windows 10 machine, ACR 16.2.0.1763 / PHSP 25.5.0 20240214.r.375

Steps to reproduce:

Create any mask (let's say radial), set exposure to -1, Feather 0 for better visibility.

The Amount slider should be in the "100" position.

Click and hold the Amount slider. Move the mouse pointer fast to the left. Don't release the mouse button. The slider position reads "0" but the mask effect is still visible. Release the mouse button - the mask effect updates on the image. The same goes for fast movements to the right (beyond the "200" position).

You have to move the slider really fast to see this issue.

Expected behavior: the mask effect visible on the photo should be constant with the slider value, even when a mouse button is not released.

 

(repost, since the previous post was not tagged as a bug)

[Rikk Flohr: Photography]

I cannot reproduce this on Windows 10 or Windows 11 - Moving to Discussions for visibility. 

Please do not delete and repost threads. 

[DiodorS]

I was able to reproduce this issue on another two Windows 10 PC with latest updates.

Any luck on reproduing this issue on Adobe side? Do you need more info?

[DiodorS]

More context, based on a message from @CJButler (thanks!):

> From what I can tell, the problem is not a lost event, but one of the slider

> value being out of sync with what is currently being displayed.

Correct.

> One thing that might be helpful to offer the ACR team is whether

> the min/max value is actually applied to the data. ; i.e. is the slider

> number wrong on the control display, or is the preview wrong and

> the underlying data actuallyhas had the indicated setting applied correctly. 

The slider value is being displayed correctly, but it is not applied to the data, i.e. the preview shows the effect applied as if the slider was in the middle possiotion.

You can see that in my screen recording - when I move mouse to the left (fast! way over the left edge of the slider), the slider value reads 0 (correct), "Light" panel is disabled (correct), but the preview still shows (incorrect) dark circle, as if the Amount slider was reading ~170 (the value just before draggigng it to the left).

The preview gets updated to the correct state after releasing left mouse button.

If you move the slider slowly to the left, both the slider value and the effect visible stay in sync, both in the middle and at the "0" possition.

[CJButler]

Just to be clear, Rick is The Guy for ACR support issues. But he (or someone on the team) needs to be able to reproduce the problem before progress can be made. 

[DiodorS]

Thanks! @Rikk Flohr: Photography please let me know if you need more info to be able to reproduce this issue.

[DiodorS]

Severity:

> How is this impacting your workflow?

Medium impact, but very distracting. 

> What workarounds have you come up with?

No workarounds found.

> Is this blocking you from getting your work done?

It impacts the time needed to set up masks. When I create masks with very subtle effect I want to be able to quickly disable and re-enable the mask with custom amount. I can use the eye icon to toggle visibility, but I want to have control over the amount too.