1.11.6: Context menu does not appear in browser preview pane

[Geralex]

XnView: MP 1.11.6 - 64-bit
OS: Windows 11 24H2 - 64-bit

Context menu does not appear after right-click in a browser preview pane if XnView was started fullscreen with a file.

Expected behavior: right-click menu must appear.

To reproduce:

1. In "Settings > General > Startup" set "Start with file Open" to "Browser - Fullscreen"
2. Start XnView with a file (open a file associated with XnView or drag-and-drop an image file over xnviewmp.exe in windows explorer).
3. Switch from fullscreen view to windowed browser view (press "Enter" or double-click).
4. Now try to right-click in an image preview pane - context menu is expected to appear but nothing happens! If you'll make a double-click with right mouse button here then the image will be opened in a viewer tab, so right-click is treated as left-click here!

If XnView is started normally (without file) then context menu appears as it should.
This bug is also reproduced with XnView MP 1.11.5 in Windows 11 and Windows 7.

Screenshot with wanted menu:

Screenshot xnv.jpg

[ckit]

Confirmed - Win11 25H2