I have actually a problem with my Searchview on the Support AppCompat v7 lib 24.0.0.
The SearchView is not shown up no text and input text (look screenshot)
i have this problem too, i've changed Toolbar height to absolute value instead of wrap_content and problem solved. i don't know why but i think this issue is related to CoordinatorLayout and height of toolbar, something breaks the SearchView height. if i use LinearLayout instead of CoordinatorLayout and AppBarLayout it works.
menu.xml
layout.xml
toolbar_height value:
75dp
Before absolute height value (layout_height:"wrap_content"):
After absolute height value (layout_height:"75dp"):