Problem changing bridge in TorBrowser 7.0a2

Here is a bug observed with TorBrowser 7.0a2 (which may have been there before), maybe linked to the interaction with the new guard algorithm:

• after replacing a first bridge with one other bridge, through the "Configure" dialog, TorBrowser fails to connect, with many error messages: "[warn] Failed to find node for hop 0 of our path. Discarding this circuit."

• to work with bridges again, need to erase manually the "Guard" line of first bridge in state file (with "listed=0" and "unlisted_since=..."), or put back first bridge (to get "listed=1").

Trac:
Username: torvlnt33r