[Libreoffice-bugs] [Bug 138520] New: Toolbars and page too small with Wayland fractional scaling and Qt5 plugin

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=138520

            Bug ID: 138520
           Summary: Toolbars and page too small with Wayland fractional
                    scaling and Qt5 plugin
           Product: LibreOffice
           Version: 7.1.0.0.beta1+
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: graphics stack
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: matthewtrescott at gmail.com

Created attachment 167604
  --> https://bugs.documentfoundation.org/attachment.cgi?id=167604&action=edit
Screenshot showing the dialog widget size problem

EXPECTED BEHAVIOR:
LibreOffice UI displays with UI components and text at approximately the same
size as other programs, to match the screen scaling configuration.

ACTUAL BEHAVIOR:
The top drop-down menu is scaled properly, while the other LibreOffice
components are displayed as though the screen were much larger and had a lower
pixel density. Also, dialog windows are the expected size, but their contents
are shrunken to the upper left-hand corner.

STEPS TO REPRODUCE:
1. Select a fractional scaling factor (such as 1.25) in Plasma System Settings.
2. Log out/log back in, using Wayland.
3. Start LibreOffice

SCREENSHOTS:
I've attached a screenshot showing the scaling problem with the Options dialog.
The incorrect scaling of the main UI is less noticeable, so I'll attach another
screenshot after submitting this report. Note that the display is actually
1920x1080, even though the screenshot was scaled down.

VERSION INFORMATION:
Operating System:     openSUSE Tumbleweed
OpenGL Drivers:       Mesa 20.2.2/Intel HD Graphics 620
Qt Version:           5.15.1
LibreOffice Version:  7.1.0-beta (official development RPMs) and 7.0.3.1
(openSUSE packages)

OTHER INFORMATION:
There are no relevant messages when running LibreOffice in the console. I have
tried different options such as "Force font DPI" (in Plasma System Settings)
without any effect. I'd be happy to provide any other information that might be
useful, such as the values of relevant environment variables, if needed.
Thanks!

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