recent JIRA update decreased compatibility to Opera 12.18

state 2017-03-09:
Some days ago we must have had a JIRA update (I recognized this because some icons changed).

Since then the compatibility to Opera 12.18 decreased.
Earlier I could expand the listview in "activity stream" by clicking to "show more".
The list expanded properly and I got a new button "show more" on the bottom and so on...

Since that upgrade when I click "show more" the list does not expand and the "show more" button is hidden in an invisible area.
2017-03-09-JIRA-stress-afterClickingShowMore.png

This can only be worked around ultra-clumsy by always clicking "full-view" after "show more" which is horror, since I have to scroll up & down over and over again.
2017-03-09-JIRA-stress.png

Please try to fix that, so that the explicit refresh triggered by "full view" is part of "show more" again.