So this has been happening since the first lemmy upgrade.
Basically the way I browse Is I go to hexbear, I've got All Comms selected and then hit the dropdown and sort by New. Works fine. Brings up Page 1 of New.
I then click on a post, read it, hit the back button. works fine.
I then click next page and we go to page two. works fine.
I then click on a post, read it, hit the back button. does not work fine. Instead I'm back on page 1 of new, while my url shows page 2 of new. If I refresh it, it brings page 2 back up.
Now, I just did my first step, but accidentally did Old instead of New. I fixed it, but when I went to read a post and backed out, I ended up on old again instead of new. Refreshing brought it back to new.
Do with this information what you will, but since this happens to me on desktop and mobile, I'm guessing I'm not alone.
Also, if we could get the abilities to automatically open external links in new tabs/windows that would be great.
Also, also, 
still has his first name misspelled. It's Willem.