There is currently no functional problem. I have switched all Synology NAS, all Windows computers and official Android smartphones version to v1.12.1-rc.1. This version has a special feature.
As far as I can see, this version contains a bug fix regarding stagnation in the synchronization. Some examples:
.
https://forum.syncthing.net/t/need-assistance-solving-false-out-of-sync-reporting/15975/3
.
At the moment all installations have been converted to this version and everything is running perfectly together, as I known from v1.10.0. To have also a relation to the test
https://forum.syncthing.net/t/call-for-testing-of-syncthing-android-1-12-1-rc-1/16016/4
it was my concern to keep the same version installed on all devices, it means also the Fork version.
Nevertheless, I emphasize again that the current Syncthing-Fork version also works so far without any problems worth mentioning, so I´m also happy to wait until you have the above version up and running.