So, the warning needs to be extremely clear. This potentially means you cannot trade around 12 days.
Just an example. Before the upgrade you have a contract which has a maximum timeslot of four days. Buyer is not responding during these four days. Then you go to the mediator. Another four days and finally you call the arbitrator another four days.
OK for now with the snmall volumes handled by Bisq, but if the volume goes to thousands of contracts per day this is an absolute no go.
Please make sure to do the following before updating to v1.2:
complete all trades
complete all disputes
disable open offers (not delete, just disable)
Updating to v1.2 with unfinished trades and disputes will require an arbitrator to intervene and manually make payouts. Downgrading back to v1.1.7 to rectify the situation will not be possible, so please double-check before updating.
Disabling open offers prevents the chance that one of your offers is taken before you close the Bisq program and update, which could inadvertantly cause one of the scenarios above.