currentSize can be changed due to addition, removal, or change of resolution of outputs, therefore it should be updated in Screen::apply.
Correctly updating currentSize will allow plasmashell to be notified of a change in screen size.

Reproducible: Always




Fix:

diff --git a/src/screen.cpp b/src/screen.cpp
index 6d1c5d8..7800dd1 100644
--- a/src/screen.cpp
+++ b/src/screen.cpp
@@ -129,4 +129,5 @@ void Screen::apply(const ScreenPtr &other)
 {
     // Only set values that can change
     setMaxActiveOutputsCount(other->d->maxActiveOutputsCount);
+    setCurrentSize(other->d->currentSize);
 }