I'm on the beta version and here are the issues that I notice. The first horizontal line make the text bold instead of making a line. I think that you cannot "close" a subscript or a superscript. I find the copy block button a bit too large. I think that you used the wrong spoiler tag.
Here below my test on the beta version:
!This is a spoil!<
E~x~ = x^2
Any way, I give my energy to the sync developer and testers ༼ つ ◕_◕ ༽つ
I am not yet subscribed in the Canada community in lemmy.ca, but I should ~~not~~.
You miss 100% of the shots that you don't take
Edit: The Canada@lemmy.ca link don't work. What is the proper way to link to a community in lemmy?
What bothers me with this controversy is that it's not clear for me how one can earn a living in the lemmy ecosystem if everything is FOSS. Also, one should understand that the app is in beta, but there was so much hype around that app.