If you are using the default values of the In Size the project will run fine, but changing the values will make the engine crash.
This was reported and tested in 4.25 (CL-13144385) and reproduced in Main 4.26 (CL-13230104)
Results: The Engine will crash with an Assertion
Expected: Create a Widget in memory without the engine crashing
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-92909 in the post.