Yes I've had the same problem using Firefox and it is bollocks.
That didn't used to happen.
I get round it because my Steemit posts are also on my WordPress blog - which works a shitload better than Steemit so I can easily find my old posts.
When I first started using Steemit two years ago people were saying ditch Wordpress and do it all on Steemit. Crap like this pisses me off sometimes.
Yeah, there is definitely a clear advantage displayed in backing up on multiple platforms...