@Aurimas Do you have a daemon.g file in /sys?
I think the logging (M111) should show the Gcode sent if you turn it on, which might give a clue where it's coming from. Send M111 P3 S1 and connect a serial monitor (eg YAT) via USB.
The cutter is independent - on the extruder in this case similar to Bambu/Voron setups.
Also have designed actuator activated cutter that can sit just above the extruder 🙂
Main difference between your IDEX and mine is that you have a chamber fan and an electronics fan(? seems to be disabled in the config); so it's not a perfect match but the best I can do.
@Aurimas Yours was the only BLtouch related posting I saw on RC3 . Mine seems to probe OK, I tried it twice and a G32 just in case and they work fine. . Had that error at first and went looking to see if something changed in the config.
I am also having a similar issue. I am on 3.5.0 b4. Uploading files is hit or miss. DWC will disconnect and refresh. If I keep retrying it will eventually work. The larger the file, the more I need to retry. It was fine when I was on 3.4.5. I upgraded firmware to address other issues.
Running 3.5.0 rc2 causes layer shifts when using input shaping so upgrading is not an option
@Aurimas I have my homing files such that homing X homes XYU, (same of homing U or Y). Because U homes off X, X must be homes before U can be homes in my setup. I added Y to the mix as well because there is a "safest place" to have the X and U heads positioned with their cabling and filament tubes for homing Y. So hitting home for any of X, U or Y will home X, then U, then Y in a predictable order.