Ue4 4.26 bug/issue

Could you also give this a try: Go to Edit → Editor Preferences → on the Appearance page (the one that opens by default) Change the “Enable Window Animations” box (on and off) . This was posted by DotCam in UE4 Editor Bug - Drop Down Menus Shaking - Feedback for Unreal Engine team - Unreal Engine Forums

My specs: i7 4770K 1080TI 24GB RAM. Nvidia driver version 461.40, Windows 10 Pro 10.0.19041 and UE 4.26.1

I don’t have these issues and maybe one of the differences of our systems is the key

  1. I am using an “old” driver, GameReady not Studio
  2. I am not using Raytracing
  3. I am deactivating SteamVR when I open my projects
  4. I am working with FullHD
  5. No other running programs

Sry that I don’t have a solution for you.