Think i found (and solved) another small bug
it seemed to happen in textmode concerning int 10 AH 02 and number of rows involved.
I noticed this when trying the game stackup
Before the game starts you have an option menu in textmode. When a key was pressed it became corrupted every time more and more
After some debugging i could backtrace the problem to this in the source coude (Dosbox developers please confirm this as i am no real debugging wiz 😀 )
Seems like there was something wrong with the number of rows that was used

1in /src/ints/int10.h
2(somewhere around line 96)
3
4#define BIOS_NROWS Bit16u nrows=real_readb(BIOSMEM_SEG,BIOSMEM_NB_ROWS)+1;
5
6And changed it to
7
8#define BIOS_NROWS Bit16u nrows=real_readb(BIOSMEM_SEG,BIOSMEM_NB_ROWS);

That fixed the problem
Added some screens so you would understand it a little better
Ow btw the game still has some other problems when using it together with soundblaster ...