and... I also found an okay-ish workaround for b) in this particular case: I set the position of the data label for the yellow bar (only the one at no. 9) to "inside" instead of "center" ... now it's no longer inside the bar O.o (why is it called "inside"? I have no idea.)
But it kind of works for this case... wish I could chose left/right or manually set a position, but the only choice (for bar charts) is between "center"/"inside"/"near origin".
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