Wifi

HI @Sputs40  it is possible but not the  most common Beta issue. Have you tried any troubleshooting.

Firstly reset the Network connections,General Management-Reset-Reset wifi and Bluetooth.

if that does not solve it go to Network Connections, Go to Settings- Connections - Wi-Fi - Tap the cog symbol to the right of your router - Forget . This is the bottom right on the list. Toggle your Wi-Fi off and on again - Select your router from the list of available connections, and run through all the connection steps.

Thereafter go to Settings - Connections - Wi-Fi - Tap the cog next to your router, under view More select the MAC Address Type and set this to Phone MAC. If the issue persists, best to press the Volume Down and Power buttons simultaneously  for around 10 seconds until the phone restarts, the reason being that this will resets the software and may address the issue. . An idea also to reboot the router if still issues.

If issues persist you try in Safe Mode and keep it in this Mode for at least 2 hours, https://www.samsung.com/uk/support/mobile-devices/how-to-start-my-galaxy-device-in-safe-mode/ if the issue is not present in Safe Mode would pinpoint recent third party apps which have been installed.

However you may need to send an Error Report.

@Sputs40 

Since the Wi-Fi has turned off unexpectedly, please submit an error report through the Samsung Members app after the next occurrence so the relevant logs can be collected and the issue analysed.