Hi,
this upgrade let to some smaller but annoying issues ...
KF5 applications now ignore any other widget style
except for the space wasting breeze/breeze dark -
though applications with qt4/kde4 libs dependencies
like konqueror are not affected.
Used to display window titles with the bold font variants -
but now those titles are displayed larger but not bold at all.
(I guess with a different font too)
AND - in kdevelop/kate/kwrite the ability to highlight constants
or the like with bold fonts has been lost - the color settings are
still respected, but the bold attribute has no effect anymore ...
... sadly