Same here, I was updating my Bangle.js (bootloader, settings) and then installed few apps. For Bluetooth Music Control I enabled HID mode and I think after installing GPS Info the watch went into this 'Searching for GPS time' mode.
Leaving the watch outside for satellite to fly over did not help.
Restart does not help, 'searching...' appears immediately after Bangle.js logo.
'Remove all apps' or 'Install default apps' does not work, watch is BT connectable but seems to be in busy loop.
Interestingly, and probably completely unrelatedly, latest GLONASS satellite was put into operation on 14th of April. https://www.glonass-iac.ru/en/GLONASS/