The change that introduced the preferences window also changed the main window's size from a fixed 800(H)x500(W) to whatever size the packing of the specified fields resulted in.
If the kobwindow.py code is going to use the actual window size, the text widget sizes need to be changed to recreate the effect previously resulting from "stretching" the fields (with sticky=NESW) to specifying the desired size explicitly.
The change that introduced the preferences window also changed the main window's size from a fixed 800(H)x500(W) to whatever size the packing of the specified fields resulted in.
If the kobwindow.py code is going to use the actual window size, the text widget sizes need to be changed to recreate the effect previously resulting from "stretching" the fields (with sticky=NESW) to specifying the desired size explicitly.