Since one of the recents releases, a very serious bug is happening. I synchroninze two Lightroom Desktop CC and two Lightoom Mobile instances and I alaways have been confronted with synchronization problems, and give or take, scratching the install on one of my macs eventually resolved the problem (at the expenses of countless hours spent on this).
Now, I much more worrysome problem occurs (very frequently) : when I try to edit a photo on my main Mac, LR CC tells me that editing parameters are missing and that I should open the app on the mac where the edits where made... which is precisely that Mac, which makes the alert totally meaningless. Therefore, as far as I can tell, all my edits are lost (and I have an exhibition next week). Please help, this is very very bad.
FYI, I also every month open Lightroom Classic and let synchronization terminate in order to have a backup (you know, as for cases like this).
I've seen the "Known Issues" page and tried the solution that was suggested (change the rating or the flag) by it did not
So please, please, please, fix this issue, I am loosing countless hours of work and I no longer trust LRCC for profesional work.