I´m having 2 problems with 4.0 (also with 4.0.3)
The stick to bottom feature on popups it’s not working well if the browser has the search bar on the bottom, like on iOS (Safari and Chrome).
What the stick to bottom should do (like on a full width box): https://syngspace.com
Also having problems when a page loads, at loading images. They are missing for a few seconds and then they load.
I´m having problems also with the layers panel, sometimes if I select one thing on the canvas it doesn’t shows the selected layer on the layer panel.