Unable to cancel manual override using [x] button

[glynhudson]

There used to be a little [x] click-box next to 'manul override', but this seems to be missing in the latest master version

This is what it used to look like, but it was normally white:

[KristianDebrenti]

@glynhudson also, are you able to adjust the slider of the Charge Rate? I am unable to do so.

[glynhudson]

Yes, current adjustment works fine