Keyboard on shield tv: strange behavior with pause key

Hi, I encounter a strange behavior on shield tv android: I would like to use the run ahead option and determine the number of frames with pause “p” and “k” to count frames. My problem is the pause key “p” doesn’t seem to work. I have to hold press the p keyboard in order to keep in pause. I can t stay on pause if I don t press and holp “p” key. The pause button is configured on “p”. It seem that the keyboard on shield tv doesn t communicate correctly with android shield tv. Shield tv users, have you got problem Ith bluetooth keyboard ? Thanks