Bug in 2.1.1 - Rolling back again

[StudioVulcan]

I downloaded the beta a while back and this issue stopped me from keeping the version even though there were some QoL updates I really appreciated. Seeing as this is a stable release, i figured the bug may not be there, but it is.

Sending over a plate or plates to my printers, one consistently can NOT get the file send to it. Prior versions, no issues (the previous version i was using today). I rolled back from the beta and immediately didn't have the issue, clearly it's the same issue.
I figured someone may need to be alerted of it. 3 of my 4 printers will get the file sent and received but this one printer just absolutely will NOT get the file. (On the beta it was the same issue, just one of my printers wouldn't receive the file, however, it was a different printer from this one, oddly.)

I've tried relogging into everything and swapping over wifi connections many times to no avail. It's got to be a bug someone needs to know about. I hope this is helpful <3