In EOG application > file > open > opens load inage window > bring focus 
on file name widget > press tab key, focus moves on to the toggle button.
Screen reader  do not read the text content of the toggle button.

Expected:

screen reader should read the rext content of the toggle button. for ex: 
file type all images toggle button.

case 2:
bring the focus on toggle button > press space bar, pull donw menu opens > 
use up / down arrow keys for navigation.
Now, screen rean reader reads as " menu item available , for all jthe menu 
items.

Expected:
when focus moved on to each endividual menu items, then screen reader 
should read the each individual menu items names.