To reproduce:
1. Open any project
2. Create new Material
3. In Inspector window, select any object picker (circle with dot inside)
4. In Object Picker window, select any texture from the list
5. Press Home and End buttons

Expected: Home/End buttons select the first and the last object picker's object respectively (check .gif attached)
Actual: Home/End buttons' input is ignored

Reproduced in: 2018.1.0a1, 2018.1.0b4
Not reproduced in: 2017.2.1p2, 2017.3.0p3

Note: applies to any object picker