Fix room pane default size

src/gui/Base/MultiviewPane.qml

@@ -6,13 +6,15 @@ import QtQuick.Layouts 1.12
 
 HDrawer {
     id: pane
-    defaultSize: buttonRepeater.summedImplicitWidth
-    minimumSize:
-        buttonRepeater.count > 0 ? buttonRepeater.itemAt(0).implicitWidth : 0
+    defaultSize: buttonRepeater.count * buttonWidth
+    minimumSize: buttonWidth
 
 
     property color buttonsBackgroundColor
 
+    property int buttonWidth:
+        buttonRepeater.count > 0 ? buttonRepeater.itemAt(0).implicitWidth : 0
+
     readonly property alias buttonRepeater: buttonRepeater
     readonly property alias swipeView: swipeView
 
@@ -33,7 +35,7 @@ HDrawer {
                 width: parent.width
                 populate: null
 
-                HRepeater {
+                Repeater {
                     id: buttonRepeater
                 }
             }

src/gui/Pages/Chat/RoomPane/RoomPane.qml

@@ -9,6 +9,12 @@ MultiviewPane {
     saveName: "roomPane"
     edge: Qt.RightEdge
 
+    defaultSize:
+        (buttonRepeater.count - (roomPane.collapse ? 0 : 1)) * buttonWidth
+
+    buttonWidth:
+        buttonRepeater.count >= 1 ? buttonRepeater.itemAt(1).implicitWidth : 0
+
     buttonsBackgroundColor: theme.chat.roomPane.topBar.background
     background: Rectangle { color: theme.chat.roomPane.background }