Massive issues with OTG access to USB devices

I love this minimalist app and its design. However I have massive issues when using it with an external device (Garmin Oregon) via an OTG adapter. This works with other file managers, so the problem must be with this app:

• Copying files from the internal storage to the OTG device does not work correctly. A file is always created, but most of the time its size is 0 bytes (I verified by attaching the external device to my PC). I only succeeded to copy a file once, but then could never reproduce that success.

Less serious issues:

• When attaching an OTG device while MF is already open, it will not detect the new device. A force-close and restart of MF is needed before the OTG device is detected.
• When detaching an OTG device while MF displays a folder on it, some unhandled Java exception gets thrown.

Thanks for the work you have already invested into this app!

My device: Pixel 6a, newest system update

No source files, tests, or entry points are named. First reproduce the OTG copy, attach-detection, and detach cases on the reported Pixel 6a setup; done means files copy with their contents intact, newly attached devices are detected without restarting, and detaching a displayed device does not throw an unhandled exception.