Your system information

• Steam client version (build number or date): 1687386907
• Distribution (e.g. Ubuntu): Manjaro KDE
• Opted into Steam client beta?: Yes and No (tested both)
• Have you checked for system updates?: Yes
• Steam Logs: steam-logs.tar.gz
• GPU: AMD Radeon RX 6800 XT

Please describe your issue in as much detail as possible:

Hey there,
when I try to use the new big picture mode, it seems that there are issues with personal layouts.
When I create a layout and try to save it, sometime it works, and sometimes it doesn't.
When I try to remove an old Layout, that I don't want anymore, it also "deletes" a few other Layouts and also doesn't show the standard layouts anymore.
After restarting steam, everything is back again. As well as the layout I wanted to delete.

I thought that this might be a steam controller issue, but I have the same issue with an PS4 controller with steam input enabled.
Here are the logs from Steam started in a terminal:
Steam Controller Linux Log: https://gist.github.com/TheLux83/4f45f8c9fe23e249b1f6ca62aa530f27
PS4 Controller with Steam Input enabled Log: https://gist.github.com/TheLux83/8e65b477eac1f665f7d5b814da0222b9

I've also tested this with another computer and with an Windows 10 instance at everywhere it's the same problem.

Here are a few pictures to visualize the issue:

1. Showing my Layouts
   

2. After deleting the first layout, a few more are missing
   

3. Templates are empty now
   

4. As well as Recommended
   

I also had this problems when there was the beta and I was able to use the controller configuration when I started steam with the -oldbigpicture parameter.

Steps for reproducing this issue:

1. Create a personal layout and save this
2. Try to delete a personal layout
3. A few more layouts get deleted and also