Hey there @fenggerenn! Welcome to the community! This kind of visual artifact with the engine can sometimes stem from graphics driver issues. May I know your specs?
Hi, Win10 up to date, 5.1.1, Geforce 1080 6G, latest studio drivers. STOP WASTING TIME, SWITCH ENGINE. Just went thru all the solving suggestions, turn off menu animation, switch driver to studio version, reinstall all engine, etc. With the new driver, it worked for an hour with correct menu, but it started back hiding menu, as the picture. No other program does this, and I have plenty. A while back I started to have doubts about UE programmers, things stop working for no reason, or start working after a recompile, and this audio hiss since version 4 when editor have focus and you click beside window, hiss stops !!! the menus have no short cuts, app is taking the focus all the time. Those are all beginners mistakes, not following windows API calling conventions, with some memory leaks, and the fact that it have to compile 10K shaders on a BLANK project ?!? and that it recompiles shaders every time you test it on device even if you change nothing visually ? …I give up, I switch engine. I spend more time dealing with bugs then on coding…So, as for this problem, CODING BUG period.