Any way to prevent loss of posts because of this 502 errors?
It is kind of annoying when it happen
used to copy the text before sending it or in my phone i used to connect with uc browser which you can recover the text when you press the back button but it is still a little buggy
That or you can just hit preview and it's saved in 'draft' for 7 days (draft is right under preview. Go ahead, give it a try!) if you're writing up a good in-depth post just make sure you hit preview and you're good to go.
I get these 502 errors at least once a week and I find that after a few refreshes it's usually resolved. Once in a blue moon it really affects me and I can't do anything at all on bitcointalk for a few hours. That hasn't happened in months and months though.