You can buy sliding door hardware locks that are installed separately from the handle. This is a less aesthetically appealing solution however a more reliable one.
https://theaussieexperience.my....strikingly.com/blog/

You can buy sliding door hardware locks that are installed separately from the handle. This is a less aesthetically appealing solution however a more reliable one.
https://theaussieexperience.my....strikingly.com/blog/