Usb flash Otg issue

[arsinn]

Hi.after ota marshmallow updating usb flash Otg doesn't work well for me. In fact usb flash drives doesn't mounting and recognize by native file manager. I try it by two different usb flash that works perfectly before updating with my phone. wipe cash partition and usb formating(fat32; exfat) were not useful. Htc M8 android 6