Instance remained paused when disconnecting during Ultimatum encounter

During an active Ultimatum encounter I unfortunately disconnected. However, this was right when the rewards / next round UI popups appeared that pauses the instance.

After reconnecting to the game and re-entering the map, the instance was still paused. I couldn't move or use any skills at all.

A minute or so of not being able to move, the instance resumed but I lost all rewards from any completed rounds.

Ideally, in this particular case when DC'ing while paused, upon entering the map portal I should receive a notification that the instance is paused with an option to 'resume instance': my character would be moved / teleported to the location it was when the DC occured (or when the server noticed the DC) and reinstating any buffs / debuffs / flasks / etc that were active. The rewards / next round UI should then re-appear and I could continue with my encounter. This could only happen if I haven't changed my gear, passives or anything else that could affect my character.