Two small bugs, #1 is a bit more annoying than #2.
When adding a new field to a collection (in CMS) whilst working on the collection template, there's no change in the option fields that you can select. You need to refresh the page, or switch back/forth for the dropdowns (i.e.link settings) to use all fields.
When changing a font size by keyboard, not liking the result thus pressing CTRL + Z, somehow it seems like the value doesn't properly change back. It does in the visual part of the designer, but it doesn't (always?!) in the values part of the interface. Does that make sense?