Closing ParaView causes corrupted settings on Linux with Breeze theme

It does not seem to impact everyone on Linux though.

How to reproduce:

• Delete existing settings
• Launch ParaView master (note that it is not reproducible on ParaView 5.6 release or build)
• Close it properly (killing it do not corrupt the settings)
• Launch it again, all docked widgets and toolbars are closed

My specs:

• Arch Linux
• KDE with Breeze theme
• Qt 5.12

@lrineau reproduces this issue on :

• Fedora 28
• KDE
• Qt 5.11

changed the description

@mwestphal does not reproduce on:

• Arch Linux
• Awesome
• Qt 5.12

I do not reproduce on:

• Kunbuntu 18.04
• KDE
• Qt 5.9

It seems related to KDE Plasma.

If I run paraview with:

XDG_CURRENT_DESKTOP=Gnome ./bin/paraview

even inside my KDE session, then the problems disappear.

I had a look at /proc/$(pidof paraview)/maps, with XDG_CURRENT_DESKTOP=Gnome and without, and the difference seems:

@@ -1,3 +1,4 @@
+/usr/lib64/libdbusmenu-qt5.so.2.6.0
 /usr/lib64/qt5/plugins/imageformats/kimg_eps.so
 /usr/lib64/qt5/plugins/imageformats/kimg_exr.so
 /usr/lib64/qt5/plugins/imageformats/kimg_pcx.so
@@ -19,5 +20,6 @@
 /usr/lib64/qt5/plugins/imageformats/libqwebp.so
 /usr/lib64/qt5/plugins/platforminputcontexts/libcomposeplatforminputcontextplugin.so
 /usr/lib64/qt5/plugins/platforms/libqxcb.so
-/usr/lib64/qt5/plugins/platformthemes/libqgtk3.so
+/usr/lib64/qt5/plugins/platformthemes/KDEPlasmaPlatformTheme.so
+/usr/lib64/qt5/plugins/styles/breeze.so
 /usr/lib64/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so

In one of those two extra Qt5 plugins, there must be one that triggers the issue.

@michael.migliore : can you had a screenshot of the issue ?

changed the description

changed title from Closing ParaView 5.6 causes corrupted settings on Linux to Closing ParaView causes corrupted settings on Linux

changed the description

changed title from Closing ParaView causes corrupted settings on Linux to Closing ParaView causes corrupted settings on KDE

I do reproduce with switching to KDE instead of Awesome.

it is caused by breeze.so, removing it or removing its permissions resolve the issue.

I've opened an issue there: https://bugs.kde.org/show_bug.cgi?id=402244

Next step would be to test with a minimal Qt application, but I'm going to pass on that.

changed title from Closing ParaView causes corrupted settings on KDE to Closing ParaView causes corrupted settings on Linux with Breeze theme

changed the description

Indeed, it's not related with KDE, I do reproduce with i3 and Breeze theme set with qt5ct.
It's definitely related to Breeze.

changed the description

Another note: it is related to the Layout property under mainWindow group. Removing this line fixes the issue (but removes user custom layout of course).

mentioned in merge request !2963 (merged)

assigned to @michael.migliore

closed via merge request !2963 (merged)

added workflow:needs-verification label

@mwestphal Since you could replicate this issue (at least on KDE), could you test a nightly, and if this fix is correct, remove the "needs-verification" label? Thanks! Alan

This bug actually does not impact the release or nightly as Qt is shipped with it and it does not contain breeze.so.

That also means that the release does not use Qt theme of the desktop.

shipping breeze.so with ParaView would require us to build some part of KDE in the superbuild, I'm not sure we want to do that.

removed workflow:needs-verification label