Please help! Major game bug, cant fix >.<

Please disable all your mods then run the Validate Integrity of Game Cache via steam and then test without any mods.

Instructions with pictures can be found here: https://support.steampowered.com/kb_article.php?ref=2037-QEUH-3335

If the problem persists, please let us know and attach new log files.

If this resolves the problem, then the issue is with one, or a combination, of the mods you are using. If you can determine which mod(s) are causing the issue then please inform the mod author(s) so they can fix the bug.

The 4G Internet in our new neighbourhood is so bad playing on public servers is not very feasible any more, so I bought a copy of DST for my son's Steam account so he, my daughter and I could play it over LAN, and it was great for a while.  We were using plenty of mods, with no issue.  We have recently encountered the same issue as the OP, whether mods are enabled or not.  My host PC is fine, its theirs that encounters the weird stats / craft TAB issue.  I even clicked "clean mods" on both PCs and verified the game files, and then tried to play vanilla (modless) again but still have the same issue.  Do you need the client_log.txt from my or his PC to help solve this?