Fix incosistent scrolling in Firefox

Signed-off-by: Simon L <szaimen@e.mail.de>
Signed-off-by: nextcloud-command <nextcloud-command@users.noreply.github.com>

apps/files/css/files.css

@@ -166,6 +166,7 @@
 
 .app-files #app-content {
   width: calc(100% - 300px);
+  overflow-anchor: none;
 }
 
 .file-drag, .file-drag .files-filestable tbody tr, .file-drag .files-filestable tbody tr:hover {

apps/files/css/files.scss

@@ -113,6 +113,8 @@
 	// force  the width to be the full width to not go bigger than the screen
 	// flex will grow for the mobile view if necessary
 	width: calc(100% - 300px);
+	// disable overflow-anchor which causes undesired behaviour on Firefox
+	overflow-anchor: none;
 }
 
 .file-drag, .file-drag .files-filestable tbody tr, .file-drag .files-filestable tbody tr:hover {

apps/files/css/merged.css

@@ -166,6 +166,7 @@
 
 .app-files #app-content {
   width: calc(100% - 300px);
+  overflow-anchor: none;
 }
 
 .file-drag, .file-drag .files-filestable tbody tr, .file-drag .files-filestable tbody tr:hover {