sorry i didn't want to submit the last voting. I didn't read the "relative to the PlotBox diagonal" at the time i was about to write a critic, but as i reread the description i closed the tab.
But i still think that this is an annoying feature, i would like it more if i could choose wether it should be relative or a fix size. I also don't like that it clears the axes. I know a workaround but it's still annoying me everytime i have to use arrow3. Just my opinion.