I'm using Web App Builder Developer Edition 2.7 and running into a weird piece of behavior.
When the app is launched, the widgets that should appear in the top ribbon (banner) do not render in the appropriate location. They're being drawn just under the banner to the left of the LayerList Widget. This happens roughly every other time.
Interestingly, if you minimize/maximize the browser window, the widgets appear in the appropriate location.
It seems to do with the size of the browser window, in my experience.
Anyone have any insight? I see there was a post for Flex on this (https://community.esri.com/message/407201?q=My%20widgets%20are%20not%20appearing%20in%20the%20top%20ribbon) but since this is a different application framework, I thought I'd push it out here.
I can also send .har file if need be for troubleshooting.