@@ -1938,7 +1938,7 @@ DesignerMove.enablePageContentEvents = function () {
     $(document).on('mousedown', function (e) {
         DesignerMove.mouseDown(e);
     });
-    $(document).on('mouseup', function (e) {
+    $(document).on('mouseup', function () {
         DesignerMove.mouseUp();
     });
     $(document).on('mousemove', function (e) {
 
@@ -1056,7 +1056,7 @@ private function findDistinctValuesCount(array $columns, $table): array
                 continue;
             }
 
-            $result[$column] = (int) $res[0][$column . '_cnt'];
+            $result[$column] = (int) ($res[0][$column . '_cnt'] ?? null);
         }
 
         return $result;
 
@@ -1368,7 +1368,7 @@ private function init(): void
             ],
             [
                 'query' => 'SELECT COUNT(*) FROM `pma_test`.`table1`',
-                'result' => [[0]],
+                'result' => [],
             ],
             [
                 'query' => 'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.'
Original file line number	Diff line number	Diff line change
`@@ -1056,7 +1056,7 @@ private function findDistinctValuesCount(array $columns, $table): array`
`1056`	`1056`	`continue;`
`1057`	`1057`	`}`
`1058`	`1058`
`1059`		`- $result[$column] = (int) $res[0][$column . '_cnt'];`
	`1059`	`+ $result[$column] = (int) ($res[0][$column . '_cnt'] ?? null);`
`1060`	`1060`	`}`
`1061`	`1061`
`1062`	`1062`	`return $result;`
Original file line number	Diff line number	Diff line change
`@@ -1368,7 +1368,7 @@ private function init(): void`
`1368`	`1368`	`],`
`1369`	`1369`	`[`
`1370`	`1370`	'query' => 'SELECT COUNT(*) FROM `pma_test`.`table1`',
`1371`		`- 'result' => [[0]],`
	`1371`	`+ 'result' => [],`
`1372`	`1372`	`],`
`1373`	`1373`	`[`
`1374`	`1374`	'query' => 'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.'