In Power BI Designer, I loaded two datasets. One had 8 fields, the second has 11. This created all kinds of developer unfriendly problems that should be easily solved. 1) Can't collapse datasets. All datasets are fully expanded always. 2) Because of this and the initial fixed size of the field list, the last field in the second dataset was not visible even when using the internal scrollbar for fields. 3) I finally figured out I could stretch the field list's internal section with the horizontal divider between it and the report layout section. During stretching, the last field became visible, but as soon as I released the mouse button, it disappeared again. I had to finally stretch it so that the scrollbar itself disappeared and all fields were visible. 4) But now the report layout section is miniscule and can barely show any single aspect (Values, Axis, etc.). 5) And if I add a third dataset (thereby completely precluding the possibility of containing all the fields on my desktop without scrolling), the last field of the last dataset is completely unreachable. So anyway, definitely need to fix the scrolling / field visibility. I'd recommend if possible making it dockable / detachable from the main window. Also perhaps a search bar at the top to filter the fields I want. Anyway, field selection needs a bit of UI love.
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