To reproduce:
1. Open my attached project "DoYouCopy.zip"
2. In Hierarchy window, find "ButtonMap" Game Object and select it
3. In Hierarchy window, find "Map" Game Object and select it
4. Observe the console

Expected: no errors appear
Actual: console errors being flooded "Layout update is struggling to process current layout "

Reproduced in: 2019.1.0a10, 2019.1.0a11
Not reproduced in: 2018.2.19f1, 2018.3.0f1, 2019.1.0a1, 2019.1.0a9

Note1: issue only appears when selecting if the both of the object have Image component enabled, seems like there's several more conditions to be met
Note2: issue does not reproduce if editor is not maximized
Note3: does not reproduce on Mac

Note4: full error: Layout update is struggling to process current layout (consider simplifying to avoid recursive layout): VisualElement unity-panel-container15 (x:0.00, y:0.00, width:389.00, height:947.00) world rect: (x:0.00, y:0.00, width:389.00, height:947.00)UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)