I've replicated the following in both Chrome and MS Edge browsers:
- Bring up the Embed "builder" UI (eg here)
- Zoom in a little (not sure this is necessary)
- Turn on the Spot forecast
- Now click-drag the map down/right, (scrolling to mark the correct location for the spot forecast, a spot NW of what I see)
Not every time, but incredibly easy to replicate the UI going into an endless loop. The following is what I see, and is my guess as to the actual bug
- Draws with forecast
- But forecast covers the current spot
- So it redraws without forecast
- Yet I dragged the map and actually want to mark a spot that will move the old spot off the map
- So it moves the map (but hasn't yet moved the spot -- is this the bug?)
- And we're back to step one in the loop!