I think there may be a subtle bug in the Ebay Search code:

#srp-river-results-SEARCH_STATUS_MODEL_V2-w0-w1

 Some searches will be OK, but others show the Sort and View boxes OK, but will not react to a mouse-over or click. The same search work fine with Chrome. Steps to reproduce:

Go to https://www.ebay.com.au

Search for item in specific department (Phones & Accessories) with this:
Tempered Glass Screen Protector XIAOMI REDMI NOTE 4
Then try to use the SORT or VIEW drop-downs in list.


Actual results:

Both the Sort and View drop-downs fail to react or drop to select an item.