No, I have the same issue.
It can be a little janky as the max is 200 of each.
If im honest, the whole 'go to camp, go back, push it, go back to camp' nonsense never worked for me :P
go to camp.. push it. go to peggy/vault. do something there (buy a cheap vendor item, dismantle something..) and then it saves. but even then, if the value is set high (say 500) it will randomly jump down to 200 for everything after a time.
Also, just to confirm as of this morning (weekly reset for quest and Wanderer) everything is still working fine for me
I asked my landlord and the power company the same question. Guess what they answered?
yes all zombies, and yes in private.
Well the game has not patched, and I went and tested it, and lo and behold.. the trainer is working as intended.
The video I shot here, is the same trainer with the same version with the same results.
I have no idea why you are not getting them to freeze, but likely its that YOU aren't the host of the server somehow.