I found one issue which causes memory increasement:
When I click to the panel to add widgets, plasmashell CPU usage became about 10% from zero and memory increases continuously (about 30 MB in a minute).
Even if there is no change on the panel the memory increasement does not disapear.
Other programs may increase plasmashell as well as after a few hours plasmashell memory takes about 600MB instead of the starting 200MB.
But for one issue, there is the add widgets function in the panel which creates huge memory usage.
Same issue on Manjaro Plasma 5.3.1, KF5.11
I found one issue which causes memory increasement:
When I click to the panel to add widgets, plasmashell CPU usage became about 10% from zero and memory increases continuously (about 30 MB in a minute).
Even if there is no change on the panel the memory increasement does not disapear.
Other programs may increase plasmashell as well as after a few hours plasmashell memory takes about 600MB instead of the starting 200MB.
But for one issue, there is the add widgets function in the panel which creates huge memory usage.