What is this blank white box in pgAdmin 4

From startup in pgAdmin 4, there is a large white box with no text or buttons on it centered over the screen in the browser.

I'm using firefox, but also tried Chrome, same result, large white window of some sort.

I can drag it out of the way but haven't found a way to close it

Is there a way to get rid of it?

I had the same problem after un update,

I had to go to file > reset layout

At risk of having this deleted, the solution I ultimately went with was to use the DBeaver database tool instead :)

It's a local application instead of run through the web browser as pgadmin4 is.

There is no floating white box anywhere to be found.

With the pgAdmin 4.10

File -> Reset Layout
works.

May be fixed in future versions