- fixed the setting color functionality on right click on the objects in the Project Tab such that the set color (or opacity) it is stored in a persistent setting correctly and the colors for Gerber objects are restored in order

- trying to fix a Runtime exception that may happen when the Plugin Tab is deleted completely

appPlugins/ToolDblSided.py

@@ -2,7 +2,8 @@
 from PyQt5 import QtWidgets, QtCore, QtGui
 
 from appTool import AppTool
-from appGUI.GUIElements import RadioSet, FCDoubleSpinner, FCButton, FCComboBox, NumericalEvalTupleEntry, FCLabel
+from appGUI.GUIElements import RadioSet, FCDoubleSpinner, FCButton, FCComboBox, NumericalEvalTupleEntry, FCLabel, \
+    VerticalScrollArea
 
 from numpy import Inf
 from copy import deepcopy
@@ -69,7 +70,17 @@ class DblSidedTool(AppTool):
                     break
             # show the Tab
             if not found_idx:
-                self.app.ui.notebook.addTab(self.app.ui.plugin_tab, _("Plugin"))
+                try:
+                    self.app.ui.notebook.addTab(self.app.ui.plugin_tab, _("Plugin"))
+                except RuntimeError:
+                    self.app.ui.plugin_tab = QtWidgets.QWidget()
+                    self.app.ui.plugin_tab.setObjectName("plugin_tab")
+                    self.app.ui.plugin_tab_layout = QtWidgets.QVBoxLayout(self.app.ui.plugin_tab)
+                    self.app.ui.plugin_tab_layout.setContentsMargins(2, 2, 2, 2)
+
+                    self.app.ui.plugin_scroll_area = VerticalScrollArea()
+                    self.app.ui.plugin_tab_layout.addWidget(self.app.ui.plugin_scroll_area)
+                    self.app.ui.notebook.addTab(self.app.ui.plugin_tab, _("Plugin"))
                 # focus on Tool Tab
                 self.app.ui.notebook.setCurrentWidget(self.app.ui.plugin_tab)