Very same happened to me.
I was in Little Iguana after we lost PB, I sail out surrounded by VP. I try to teleport but am tagged, no problem, I click Enter Little Iguana, doesn't work. I lose a dura on my bellona fighting 8 VP, an officer life and 200k for crew.
I sail out in basic cutter to see if VP are gone. Now I can't re-enter port in cutter. I sail to Isle, can't enter that port either, sail to Mort can't enter.
Now gold Bellona is trapped in contested port with 3 million in upgrades.
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System reboot didn't help. I am currently unable to play.
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To help bug investigation the sequence is:
Leave a contested port but don't sail away and stay in the re-enter zone.
immediately click teleport to home base
During teleport countdown the enemy tags you, in this case is was within about 10 seconds if leaving port
click 'Enter Little Iguana' nothing happens.