@watrshed Sorry about this issue. It is a recently discovered bug that we will fix with an OS update. The cause of this is in MIDI settings, where you can select ‘MIDI Through Port 0’ which connects MIDI Out to In in software. This loop causes the ramping tempo. (If you are curious the bug is that the ‘MIDI Through Port 0’ should have never been in the device list to begin with. It is not ‘MIDI Thru’ in the traditional sense, e.g. MIDI input being passed to the output, but it is actually connecting internally the output from the software (Pd) to the input, causing a feedback loop…)
For now, please avoid selecting ‘MIDI Through Port 0’ and you should be fine. If you do select by mistake, the simple fix is to insert any USB MIDI controller, navigate to the MIDI device and select that controller instead.