Your system information

• Steam client version: November 24, 2019 11:16 Moscow time
• Distribution: Ubuntu 18.04.3 LTS
• Opted into Steam client beta?: [Yes]
• Have you checked for system updates?: [Yes]

Please describe your issue in as much detail as possible:

The Steam client restarts, sometimes the primary client remains, but it does not work.
I looked at what happens with Steam when a friend connected to me.
Log wrote me this:
/home/vl/Steam/steam.sh: line 722: 19624 Segmentation error (memory stack flushed to disk) $STEAM_DEBUGGER "$STEAMROOT/$STEAMEXEPATH" "$@"
assert_20191211153705_1.dmp[20504]: Finished uploading minidump (out-of-process): success = yes
assert_20191211153705_1.dmp[20504]: response: CrashID=bp-fa93c6de-2cec-4a7b-aca0-b765d2191211
assert_20191211153705_1.dmp[20504]: file ''/tmp/dumps/assert_20191211153705_1.dmp'', upload yes: ''CrashID=bp-fa93c6de-2cec-4a7b-aca0-b765d2191211''
Running Steam on ubuntu 18.04 64-bit
So here is the file that was mentioned.
assert_20191211153705_1.zip

Steps for reproducing this issue:

1. run the game
2. invite a friend to Remote Play Together
3. the client restarts or we expect a friend to respond, which will restart the client after