EDIT: @mindbleach@sh.itjust.works shared something that might help to circumvent this shit:
Contained in these parentheses is a zero-width joiner: ()
Basically, add those to whatever you feel that might be filtered out, then remove the parentheses. The content inside the parentheses is invisible, but it screws with regex rules.
If you just created account, if you comment on some subreddit it immediately shadowban you
thats actually new thing to me, i have seen alot of the famous subs have upped thier filters, i avoid them by filtering out those subs from my feed. also people might make a mistake by accidentally commenting on the sub they were ban years ago, apparently the filters doesnt discrminate or clear itself once your bans are lifted or years old.
It's suck, but if you make reddit account again, wait for around 3 month, or 1 year just to safe before comment. Or you can comment on smaller subreddit but don't make post. Just comment
Subreddit like r/linux shadowban you if you make post if your account too new