After you saw open the panic room on black cat and then set up the winch, you can walk inside the vault and clip inside and outside of it, if the winch breaks before you leave the vault you get softlocked and can't exit the inside of the vault.

https://cdn.discordapp.com/attachments/929206323105656902/931754158455918642/Payday_2_2022.01.15_-_13.35.29.01.mp4
https://cdn.discordapp.com/attachments/929206323105656902/931754551722274916/Payday_2_2022.01.15_-_13.38.30.02.mp4

Apologies for audio quality in the recordings.

https://cdn.discordapp.com/attachments/929206323105656902/931755094133866506/unknown.png

I was unable to reproduce this. Give it a test it without any mods installed.