We're working on a large Joomla Site with many users and have issues with Checked out items in SPPagebuilder 5 Backend. It is currently possible to open, edit and save a page at the same time with multiple users which can lead to chaos, as all changes get overwritten.

• When working in the backend, no "checked out" flag is set at all - When "User A" starts editing a Page, "User B" does not even see that the page is currently worked in (No Lock-Icon is displayed)
• When a page is edited in Frontend, the "checked out" Flag is set correctly and Frontend editing is not possible for other users - The lock symbol is correctly displayed in backend, but it is possible to open and edit the page in backend editor
• As soon as the page is edited in the backend editor, no further checks are done before saving to the database. Some kind of check, if current user equals current checked out user would seem appropriate...

Please check and fix - The "Check Out" feature has been an important core element of joomla for years and i would expect any component to use the default behaviour.