dude!

my mobile devices have been doing the same thing and I've been tearing my hair out for a fix.

do we both (by chance)

have Mullvad VPN set on the router?

I have a SBC acting as router and every interface that goes to Mullvad has this problem.

I have other interfaces that arent forced through VPN and they're unaffected.

ill contribute towards a bounty if its the same problem.