Some already know about this. But for those who don’t or forgot just a refresher. The euro slider cover can split over time. My last one lasted about 6 years. Yours and use may vary. When it does split you don’t have to toss old and buy the whole new euro tray. The replacement slider is part number 51167038333 *for the shorter euro tray version. ~$17 Takes about 10 mins to replace when you know how it slides out back channel.
Split
Replacement Slider
New vs Old
Replacement Slider