Issue #124, case 1: Added test for this case
Actual fix is in stx:libbasic, revision 3563e89f551b.
https://swing.fit.cvut.cz/projects/stx-jv/ticket/124#comment:19
#define ScrollRt_width 14
#define ScrollRt_height 14
static unsigned char ScrollRt_bits[] = {
0x00, 0x00, 0x30, 0x00, 0x70, 0x00, 0xe0, 0x00, 0xc0, 0x01, 0x80, 0x03,
0x00, 0x07, 0x00, 0x07, 0x80, 0x03, 0xc0, 0x01, 0xe0, 0x00, 0x70, 0x00,
0x30, 0x00, 0x00, 0x00};