1.4.0b2 - filter - pressing Undo applies current filter

[user0]

XnView: MP 1.3.1-1.4.0b1 64bits
OS: Windows 64bit (22H2), display resolution 3840x2160, win scaling 150%

Filter
pressing Undo applies current filter

To reproduce:
1. run clean portable XnViewMP
2. open any image
3. open Filter > Filter.. dialog
4. select any filter, e.g. Average, (optional) maximize its settings for better visibility
5. press Undo button

Issue A
filter applies to image
6. press Cancel to close Filter dialog
filter still applied to image

Issue B
6. press Cancel to close Filter dialog
7. press left/right to scroll to previous/next file in folder
8. scroll back to initial file
filter still applied to image
issue caused by Viewer cache and disappears when 'Keep current image' checkbox is unticked (View > Misc > Cache)

[xnview]

Thanks to your detailed description I can reproduce

[xnview]

See issue for current status and some details.

[xnview]

This problem is supposed to be fixed in XnView MP 1.4.3. Please check and confirm the bug fix here.

[user0]

1.4.3
Apply and Undo buttons are always disabled now,
guess it can be counted as fixed