It doesn't hide read posts permanently anymore which effectively breaks the browsing experience imo. I switched to Boost and aside from a lack of gestures it's pretty on par.

I still love Sync and use it every day, but it hasn't been updated in a year. Everything seems to be working fine, but I do think about when something breaks if it'll get fixed...

Dev really needs to be more active to catch up with changes in new lemmy versions.