I also found keyboard lacking the space bar in several situations

after changing from browser url input to editor after selection of text in workflow editor sometimes on changing focus from editor search field to editor window

However, tapping on just the opposite, i.e. search field (to change focus again) or alternatively switching between browser/editor did help to retstore the proper keyboard layout.

@Ole: Is there a way to have just the same enhanced keyboard of editor (with those special signs and cursor placing feature) for browser also?