Editing post / updating thumbnail in artwork gallery bumps post?

So, I decided to update thumbnails in some of my posts because they looked kinda blurry on some devices but this also bumped them back to top of artwork / finished-projects…

I’m not sure if this intentional or not but someone could keep editing their post to keep bumping it back to top. This might be side effect of it being based on forum system but sorting should probably based on first time of posting / and maybe likes.