Signal not working properly on /e/

Yes, that one.

or Langis (Signal name inverted) for android without Gapps or microG installed

or the offical one from the website (if you don’t mind proprietary blobs) / play store (aurora store)

I had all versions running on my S10+ as I was testing which worked best for me. I sticked with the TwinHelix, FOSS one.