Looks like a downgrade attack

Support
#1

Hallo, after last update+dist-upgrade I have new bugs

whonixcheck says: installed TB version 4.5, available versions 4.5 4.5a 4.0.8… please run Tor browser updater.

TB updater tells me this: Installed version 4.5, available versions 4.5 4.5a 4.0.8…Looks like a downgrade attack!

One more bug: On tor browser, when I run check.torproject.org and some whatismyIP page, there are different IPs. Before both pages gave me same IP addresses, now they are always different.

Safe to ignore these bugs?

#2

The intelligence of the user is required unfortunately. You shouldn’t learn to blindly dismiss it. Read. Draw conclusions. Act accordingly.

See also documentation:

One more bug: On tor browser, when I run check.torproject.org and some whatismyIP page, there are different IPs. Before both pages gave me same IP addresses, now they are always different.
Not a bug. -> new TBB feature; https://www.whonix.org/wiki/Stream_Isolation
#3

Fixed local version parser in tb-updater:

That will fix tb-updater and whonixcheck issue.

Will land in > 2.0-1, perhaps Whonix 11.