Fix metatile selector rectangle jumping

CHANGELOG.md

@@ -16,6 +16,7 @@ The **"Breaking Changes"** listed below are changes that have been made in the d
 - Metatile ID strings are now padded to their current max, not the overall max.
 
 ### Fixed
+- Fix the metatile selector rectangle jumping when selecting up or left of the origin.
 - Fix the event group tabs sometimes showing an event from the wrong group
 - Fix API error reporting
 

src/ui/metatileselector.cpp

@@ -4,7 +4,9 @@
 #include <QPainter>
 
 QPoint MetatileSelector::getSelectionDimensions() {
+    if (this->prefabSelection || this->externalSelection)
         return selection.dimensions;
+    return SelectablePixmapItem::getSelectionDimensions();
 }
 
 void MetatileSelector::draw() {
@@ -155,7 +157,7 @@ void MetatileSelector::updateSelectedMetatiles() {
     this->selection.metatileItems.clear();
     this->selection.collisionItems.clear();
     this->selection.hasCollision = false;
-    this->selection.dimensions = SelectablePixmapItem::getSelectionDimensions();
+    this->selection.dimensions = this->getSelectionDimensions();
     QPoint origin = this->getSelectionStart();
     for (int j = 0; j < this->selection.dimensions.y(); j++) {
         for (int i = 0; i < this->selection.dimensions.x(); i++) {