diff --git a/libs/ui/widgets/kis_custom_image_widget.cc b/libs/ui/widgets/kis_custom_image_widget.cc
--- a/libs/ui/widgets/kis_custom_image_widget.cc
+++ b/libs/ui/widgets/kis_custom_image_widget.cc
@@ -463,6 +463,9 @@
     double width = doubleWidth->value();
     double height = doubleHeight->value();
 
+    doubleHeight->clearFocus();
+    doubleWidth->clearFocus();
+
     doubleHeight->blockSignals(true);
     doubleWidth->blockSignals(true);
     cmbWidthUnit->blockSignals(true);