Clicking ticking has been going on for weeks.
Shower door makes popping noise.
Most of these door mechanisms are sealed with a rubber strip around the outer edges that keeps out heat cold and excess noise.
For a while thought it was electronic air cleaner zapping discovered it was the shower doors.
Sliding doors have become a popular feature for entrances to patios gardens or conservatories.
Ironically these rubber seals can often be the cause of excess noise when your doors begin to show their age.
You may hear a whistling sound the telltale symptom.
Have tried to tighten the screws i could find tried some wd40 on rollers.