Im using android 7.0 on a Samsung Galaxy S7. It appears the way chatting is changed to not be full screen in 1.8. perhaps you could make it an option as i prefer it sometimes
As for lag. This version appears to run more smoother than 1.7 of graal classic. Probably because its utilizing the 64 bit processor. i dont know i just seem to move faster in the 1.8 screen recording than the 1.7 recording.
It appears there is a sounds issue in both 1.8 versions. In 1.7 the sword sound plays every time the sword is slashed. Therefore it is consistently being played. but in 1.8 when i spam my sword it only plays it twice, stops for 1-2 seconds then plays again. like the sound is playing in intervaled bursts.
On Era 1.8 it did the same with the sound effect of me shooting my shipka. ill attach a YouTube video