What Synctrayzor displays in it’s window is essentially the web UI (I think it does some enhancements, but no major changes, but I might be wrong). “Global Changes” is probably outdated for “Recent Changes”, which is at the bottom right.
As the FAQ says, you need to enable the audit log, it doesn’t run by default. Search the Synctrayzor settings for either a mention of the audit log itself or of Syncthing command line options.
I will now try and merge all available backups of the original source folder into one (whereby I may have to remove file name extensions made by Syncthing according to the pattern ~[modification date] from the file name first).
Then I shall compare this merged backup with the current state of the source folder to see if and where mass deletions have occurred.
Syncthing told you something was wrong, and you told it all was well.
Granted, the error is not very clear, and that is now addressed, but same way I wish users would do some googling about the error instead of inventing their own remedy without understanding what it means.
Some people use syncthing as a file transportation mechanism where once the files on the other side, they are all deleted, so it’s just an annoyance for many, and a saviour for the few.
If you think the software is too dangerous for you, you are free not to use it.
We are not going to add secondary safety nets for things users shouldn’t do in the first place.