Not available selection menu in the music library

Hello,

my setup is raspberry pi 2, hifiberry dac pro, raspberry 7 "touch screen.

my problem is that I can not select the folders of the top artists, albums, songs etc. because the menu appears in the background. In the mobile browser and on the desktop this problem does not appear.
I think it is due to the window management of the Chromium browser.
Is there a way to always open these windows in the foreground?

WP_20180212_13_42_24_Pro.jpg

Hi. I had a similar problem and posted a fix here : https://volumio.org/forum/android-volumio-app-dropdown-menu-t10168.html#p60547