This day is full or first for me with Xojo:
first custom button (in years),
first hierarchical Listbox (in years),
A display bug using Listbox1.DrawInto: the disclosure triangle is draw below the first characters (column 0), the row is in the expanded state.
The disclosure triangle is grey instead of black.
Also, there is only one printed page (if the Listbox holds more than one displayed page).
At last, the printed page (as pdf) comes from a bitmap rendering (I do not printed it, so I do not know if this matters / the paper printed quality).
Xojo 2017r2.1 (test)
Xojo 2015r1 (development IDE)