Library is not displayed correctly and is not accessible

[Soljanka]

OS: elementary OS 6.1 Jólnir x86_64 Steam from flathub: com.valvesoftware.Steam, version 1.0.0.74

issue: the library ist not displayed correctly; I only get a small rectangle in the top left corner

other tabs are fine; see the store for example

I already tried different rendering settings in the interface sections without any effect.

journalctl only logs the following

io.elementary.wingpanel.desktop[5296]: ExecCommandLine: "'/home/user/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/>
io.elementary.wingpanel.desktop[5296]: System startup time: 5.88 seconds
io.elementary.wingpanel.desktop[5296]: BuildCompleteAppOverviewChange: 235
io.elementary.wingpanel.desktop[5296]: RegisterForAppOverview 1: 24ms
io.elementary.wingpanel.desktop[5296]: RegisterForAppOverview 2: 24ms
io.elementary.wingpanel.desktop[5296]: Installing breakpad exception handler for appid(steam)/version(1647446817)

I know the last commit was 4 years ago, but can you maybe point in the rough direction where the error might be?