Change of disassembly address during interaction with GUI debugger

[Vort]

It is usually convenient for me to have on screen some instructions before IP and some after.
However, when I resize GUI debugger window (or change size of individual tables), disassembly starting address resets to IP and previous instructions become inaccessible with scrolling.

For example, here is code from empty config:

Small resize of disassembly table, to see instructions better, leads to changing of starting address from 000fe05b to 000fe06f:

Version: b942d5c

[vruppert]

Both the Windows and the GTK version have code to invalidate BottomAsmLA to force a redraw using the current address as bottom address (start address on window top). The Windows version seems force the redraw in more cases as the GTK version does. Some more investigation is required.