Funky font ?

[Synless]

Your font has 3 lines with 0x00 is that why all chars look cropped on the top and bottom on a 128x32 OLED ?
Board : NodeMCu ttgo

[GitJer]

Same here on a 128x64 OLED on an esp8266.

[thefatmoop]

For an OLED that's 128x32, in OLED.cpp change
sendcommand(0x12); //COMSCANDEC
to
sendcommand(0x02); //COMSCANDEC

also when you display.print you'll need to start on column 4 and end on column 7
display.print("top of display",4,0);