Is the fix a client thing or is there an interaction with the server as well? I had really bad issues with message decryption on Element for Android last year (July 2023 based on the date I installed a different matrix client).
I’m self-hosting synapse on Debian Bullseye (from bullseye-backports).
Thanks for the info! I’ll have to give Element another go and see if it’s more reliable for me nowadays.