Rated 3 out of 5 stars

*UPDATE:*
All good after reverting to 38.8 (no newer version did work)
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Session Manager does not see tabs in windows when trying to save session.

When loading session, only one of (my) two windows loads, second one is empty.

After crash, session (115tabs) has 2.5 thousands of about:blank tabs, which are visible only in the Session Manager itself.

This review is for a previous version of the add-on (0.8.1.12).