Battles wont end

im on pc after kiling the last enemy troop but battle wont end.
@Saltypatra @Nimhain
sometime if the suggested mana pick shows it lets you collect those mana and battle will end.
here is a vid
https://www.youtube.com/watch?v=2oOYGHo_Gjk

if it dosent show a sugested mana pic it wont end at all. you can only retreat

also troops staying on board after battles end

Here is a vid of battle not ending till you match all the sugested gems
https://youtu.be/abN6Yc5OGa0