1.8.1-1.8.8: windows taskbar ABOVE xnview in fullscreen with StartAllBack

[Raider]

XnView: MP 1.8.1-1.8.8 64 bit
OS: Windows 11 64bit 24H2 26100.3775
additional software: StartAllBack 3.9.8

starting with version 1.8.1 XNview in full-screen mode does not hide the windows taskbar - it remains on top of xnview. After checking old versions I found that there is no such behavior on 1.8.0, but on 1.8.1 it appeared and did not disappear in the newest 1.8.8
this happens with StartAllBack enabled, if you turn this thing off, everything returns to normal

Effect: reduced the visible area of ​​the picture in full screen

To reproduce:
1. Just open picture in full screen

Actual behaviour (bug): XNview in full-screen mode does not hide the windows taskbar

Expected behaviour: XNview hides Windows taskbar in full screen mode

[xnview]

It seems that StartAllBack force taskbar

[Raider]

yes, but only with new versions of xnview

[xnview]

yes, but only with new versions of xnview

when using 1.8.0, you have not this problem?

[Raider]

yes, but only with new versions of xnview

when using 1.8.0, you have not this problem?

sure, I don't have this problem in versions below 1.8.1 (including 1.8.0) as i wrote earlier

[xnview]

i've installed StartAllBack on Win11 pro, and can't reproduce

[Raider]

i've installed StartAllBack on Win11 pro, and can't reproduce

hm-hm!
seems my description is not precise enough. In the startallback settings I have line 3 on the left selected, and on the right - "use the proprietary panel" (sorry, I don't know if this is enabled by default - I thought it was)

if it doesn't work out - then sorry for bothering you, I have a lot of programs and a lot of settings, apparently something conflicts with startAllBack which conflicts with XNview.

StartAllBackCfg_xGc9y0Nwru.png

[xnview]

i've tried with same, but no problem

[Gingerbread Guy]

Windows 11 Pro 24H2 26100.6584
XnView MP 1.9.4
StartAllBack 3.9.15

I only have this problem when opening an image from File Explorer. The taskbar doesn't remain visible if I double-click an image in the browser or press F11. I don't know what information could help reproduce this.

[Raider]

I found the problematic option! (problem still exists on 1.11.5)
It's start with file -> viewer - fullscreen.
With this option, opening a file in fullscreen mode results in a startallback on top of the window.
With the start with file -> browser - fullscreen option, the expected behavior is a fullscreen photo.

OPTIONS window.png

VIEWER - fullscreen.png

BROWSER - fullscreen.png

Moreover! If I open a file in viewer - fullscreen mode, subsequent switches from fullscreen to window don't result in any significant changes, and the taskbar is still visible. Likewise, if I open a file in browser - fullscreen mode, subsequent switches from fullscreen to window don't result in any problems—all switches work fine, and the image is always on top.

Description of the problem and possible fix from opus 4.8 (maybe it will help you understand the problem better)
Cause: With startInFull=1, XnView goes fullscreen during launch — before the window is fully realized/positioned — so Windows' "rude window" (fullscreen) detection never fires, and a replacement shell like StartAllBack therefore never hides the taskbar.

Fix: Defer the showFullScreen() call until after the main window has been shown and positioned (e.g. trigger it on the first show/paint event instead of at startup) so the shell registers the fullscreen state correctly.