I have the same issue, I'm scared to try anything other then LR Team's stuff now.
Does anyone have a download link for the LR Team version I can't download it from Baidu.
https://pan.baidu.com/s/13oWwWoOa_FtjmfOCR2SRzQ Password: tbc3
Version 3.3.1.1030
Anyone know how to force TWRP to decrypt? Also having this issue on 9.10.10 with TWRP 3.3.1-0 (latest available for the mix 3)
EDIT: Seems the bug is a TWRP not being able to decrypt android 10 yet. this TWRP works for some people but not myself.