This seemed to work for me. I changed tapes first thing, and didn’t have a tape full of nasty glitches. I was able to use it pretty much as normal.
Now I wish I’d kept the “dirty” 2.2 Teletype version that has W/ Type instead of trying the 2.3 beta that doesn’t; ever since I got the idea of syncing my loop length to tempo in my head I’ve been wanting to do that 
I’m encountering something else I suspected, but wasn’t sure of – sometimes when overdubbing (and more rarely when overwriting), there’s a click EXACTLY on the loop point that isn’t coming from the audio signal.
If I patch a dummy cable into IN, start with a silent loop and just let it overdub a while, I get a gradually building noise floor with a sort of rapid clicky overlay – whether that’s from my PSU or if it’s emulated tape noise, or a combination, I’m not sure. But I get a definite click every time the loop resets too.
Often the click is pretty prominent on just one or two dubs, even when recording material at a more normal level rather than just a noise floor.