Bug 509541

Summary:	krita randomly showing waiting for image operation to complete for a fraction of a second
Product:	[Applications] krita	Reporter:	Milo <milobiscuits44>
Component:	* Unknown	Assignee:	Krita Bugs <krita-bugs-null>
Status:	CONFIRMED ---
Severity:	normal	CC:	birdbluex, dimula73, emmetoneill.pdx, tamtamy.tymona
Priority:	NOR
Version First Reported In:	5.2.11
Target Milestone:	---
Platform:	Microsoft Windows
OS:	Microsoft Windows
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Milo 2025-09-16 01:02:57 UTC

SUMMARY
Krita will randomly show waiting for image operation to complete for a fraction of a second after actions on any layer. I will draw the first line of line art, pick up my pen, the start to draw the next and it will pause, get rid of my input, flash the image operation prompt for a fraction of a second, then act like nothing happens. This happens almost every stroke after now. If I'm moving a reference image on the layer, it will stop while my cursor is still moving, but this time it doesn't even flash the pop up. No matter what image I am on it does it. This includes large images with lots of layer and small images with 1-2 layers.

STEPS TO REPRODUCE
1. Create an image
2. Draw, erase, move an image/layer
3. Witness the pop up after a few seconds
4. Repeat from 2

OBSERVED RESULT
It pauses, flashes the pop up, then resumes. Sometimes my inputs I am doing won't happen.

EXPECTED RESULT
See observed. Although I should expect it to not happen.

SOFTWARE/OS VERSIONS
Windows: 10

ADDITIONAL INFORMATION
My PC is a powerhouse. I have all drivers updated and windows updated to the latest version on windows 10. This happens with and without a tablet. I've restarted krita and my pc. This wasn't happening a week ago from 9/15/25. I'm on default settings for krita configuration.

Comment 1 Tiar 2025-09-17 19:24:15 UTC

Could you please check whether the same issue was happening on 5.2.9, and if it wasn't, then check also 5.2.10? You can download portable ZIP files (no need for installation) here: https://download.kde.org/stable/krita/ (choose the version, then "krita-5.2.X.zip").

While checking this, could you please check (on all three versions) if you also have the issue mentioned in bug 509614, which is that the Transform Tool glitches when trying to change the pivot point? It might or might not be related to your issue.

(Setting to confirmed because of bug 509614 - and I've seen other people also talking about this issue, but I can't find links now).

Comment 2 Emmet O'Neill 2025-10-23 21:22:41 UTC

*** Bug 510224 has been marked as a duplicate of this bug. ***

Comment 3 Emmet O'Neill 2025-10-23 22:16:38 UTC

Try as I might, I can't seem to reproduce this bug on my system so far. I may have to test more on Windows, but I've tested both 5.2.11 and the latest git master to no avail so far.

Comment 4 Dmitry Kazakov 2025-12-02 12:18:36 UTC

Hi, Milo!

Do you still have this problem? And what tablet model you use?

People in this KA thread found out that the reason of the bug for them was the Ugee drivers ("Ugee UE16" tablet), and updating the driver resolves the issue. Can it be that you have the same issue?

https://krita-artists.org/t/intermittent-brush-issue-where-brush-stops-drawing-and-a-fast-pop-up-message-flashes-on-screen/142492