I never encountered such issue so hard to say based on the video. I do assume that if you split the layout it will not happen and if it will happen it will be easier to say what causes it.
i dont know why it happens but after a while working on b4a (about 1h) the issue is still happening even on very small layout files (maybe 20 views)
the ide also start running slow. what i mean is that i type a code and it is writing after few seconds i have finished typing. so a delay of about 2-3 seconds.
the problem is that it happens often lately. i need to mention that i have a very strong (and new) notebook! i accounter those issue since the last update (v9.3)
ps b4a is using about 2,2gb ram and when it compiles about 100% of processor is this normal? i also see that b4a is 32 bit. is there a 64 bit? will it perform better on windows 10 (a 64 bit version)?
is there something i can do to run b4a smooth again?
EDIT: after restarting b4a it even happens after few minutes now