This is not recommended; especially with a rolling release distribution such as Manjaro or Arch.
Because you have used timeshift there is no longer an issue to be diagnosed – this Support request is rather moot.
Once you have updated your machine to current, if the issue still exists, please create a new Support topic.
Regards.
Welcome to the Manjaro community
As a new or infrequent forum user, please take some time to familiarise yourself with Forum requirements, and the many ways to use the forum to your benefit:
Update Announcements
The Update Announcements contain important information and a Known Issues and Solutions section that should generally be checked before posting a request for support.
System Information
Output of this command (formatted according to forum requirements) may be useful for those wishing to help:
inxi --filter --verbosity=8
or the short form:
inxi -zv8
Be prepared to provide more information and outputs from other commands whenever asked.
Required reading
Resources
Regards.