As a matter of fact, yes I have. Quite a lot. It has nothing to do with the side-mounted 'trim" pot position, either. (I bypassed it as a test on one EV-5 pedal.) And it's not isolated to the PitchFlex algorithm only. After some repeated use , it may lock to a range of 0-86, or 0-99 (version 3.0.0 installed).
If you carefully remove (just) the expression pedal plug, you'll see the display "snap" to 100 (or full single value) briefly. After plugging the EV-5 back in, I find that the full 0-100 range holds again for some time. I'm not sure how often it happens, but it's enough to be irritating. On rare occasions, I've had to power-down the PF to get the combination 'behaving' again.
I've been assigning a MIDI CC to the PED destination in the System settings, and that proves to be very reliable. But I still use an expression pedal direct-to-PF as well. Root cause of the problem? That's puzzling. The only thing 'unusual' about the EV-5 is the 10K pot, and that auxiliary trim. If it's on the PitchFactor end, it's difficult to reproduce the conditions that can cause the problem to recur 'on demand'.