Hello @OlegAckbar, can you test if completely closing Steam, then running steam -no-cef-sandbox from a terminal has an effect? (from https://github.com/ValveSoftware/steam-for-linux/issues/9321#issuecomment-1514639457)
If that doesn't work, please look in ~/.steam/root/logs for cef_log.txt, steamwebhelper.log or webhelper.txt and provide whichever ones exist as an attachment or Gist. (They might not all exist, that's OK.)
Hello @OlegAckbar, can you test if completely closing Steam, then running
steam -no-cef-sandboxfrom a terminal has an effect? (from [#9321 (comment)](https://github.com/ValveSoftware/steam-for-linux/issues/9321#issuecomment-1514639457))
I've tried, result is the same.
If that doesn't work, please look in
~/.steam/root/logsforcef_log.txt,steamwebhelper.logorwebhelper.txtand provide whichever ones exist as an attachment or Gist. (They might not all exist, that's OK.)
I had only one of mentioned files in my logs folder
steamwebhelper.log
Thanks @OlegAckbar, /usr/bin/zenity: symbol lookup error: /lib/x86_64-linux-gnu/libsoup-3.0.so.0: undefined symbol: nghttp2_option_set_no_rfc9113_leading_and_trailing_ws_validation is the key detail and that issue is being tracked at #9356. Closing in favor of the older issue report.
Your system information
Please describe your issue in as much detail as possible:
When I upgraded my Ubuntu and tried to launch Steam it could not connect to network and I saw blank screen instead of store or library. Not that I completely reinstalled Steam I can't login because I see blank windows instead of login window. Here's screenshot of login screen and console log.

https://gist.github.com/OlegAckbar/81ec047fc49886afe62aaed4668ce30a
Steps for reproducing this issue: