[BUG] "Problems" pane has wrong state on load (needs clicking twice if errors occur after loading)

[mkst]

See screenshot. I just gave some bad compiler arguments to a scratch which caused the compilation to fail, but the navigation would minimise the already-minimised panel

[mkst]

OK, the up/down behaviour seems to be based on the height of the window..

UP (correct):

DOWN (wrong!):

Which looks like it's deliberately doing something, but its not doing what I want.