Thank you for your work!
Decryption problem, Before updating to latest rom: xiaomi.eu_multi_HMNote9Pro5G_MI10TLite_V13.0.10.0.SJSCNXM_v13-12
Decryption worked, rom updated with error mounting cache partition. after wiping cache and calvik, decryption is lost. had no lock pattern before, tried adding and removing pin, still no decryption.
Edit: Tried wiping internal storge, now i cannot access it from inside the rom...
During the process of updating the rom, it is this who has the control, TWRP does not interact at all.
When you downloaded the Rom, did you check its MD5?
The rest of what you indicate I think is unrelated to TWRP.
After updating the rom is NOT necessary or convenient to do a wipe of Dalvik or /Cache.
On the other hand, if you wipe the internal storage, it is the same as doing a factory reset. All your data is erased.
I have looked just now and there are 290 downloads. So far nobody has reported any issues with this update.
Why didn't you do the update by OTA, from the rom?