Bought this theme called Slavia, spent weeks trying to fix this and I've had no luck, the author doesn't respond to everybody, support section is dead et cetera, but aside from this bug it's a great theme.
The problem is that although most of the posts load, there's no logic as to why some don't, I've tried copying and pasting them back in line by line and ultimately can't figure out why some just don't load.
These load just fine on our main TLD though using another theme, the debugger and logs reveal nothing. I've even tried disabling all plugins and starting fresh on another subdomain, same issues, definitely an issue with the text itself for some reason, any way I could find out what the issue is?
It'd mean the world to get this sorted out. Will buy multiple beers for who figures it out as well as thank you publicly via my 25k Twitter account.