SteamOS - WiFi authentication fails for passwords with commas

[sopsmattw]

Your system information

• Steam client version: 1732746274
• SteamOS version: 3.6.20
• Opted into Steam client beta?: No
• Opted into SteamOS beta?: Yes
• Have you checked for updates in Settings > System?: Yes

Please describe your issue in as much detail as possible:

Steam OS would not authenticate to wireless network that has a comma in the password.

Steps for reproducing this issue:

1. Create a wifi network with a comma in the password. (Use your phone for an easy test)
2. Try to authenticate. Fails
3. Change the password to something without a comma.
4. Try to authenticate. Success.

[bertogg]

Tested with 3.6.20, it works fine here. I actually used a phone as a hotspot as you suggest.

Can you reproduce it reliably with any kind of password that has a comma?