Yeah, guessing there may be a bit more to the bluetooth problem possibly for some users and devices.
I definitely know after I updated my RS units to 26, I had issues with just trying to connect via Bluetooth with a Trimble Nomad 900 data collector where I never had issues before. I think I gave up on it out of frustration. My Surface devices work, so I just use those. I’ll try again when I get time and after a newer firmware.
EDIT: The firmware version I had on my Reach RS units before I upgraded to firmware 26 was version 2.16.2 of 2019. I was able to connect to older devices (i.e. Trimble Nomad 900 data collector) WITHOUT having to use a passcode. Now it will not after v26, requires passcode but device does not support passcodes.