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 ScrollUp_width 11
#define ScrollUp_height 11
static unsigned char ScrollUp_bits[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x70, 0x00, 0xf8, 0x00,
0xfc, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};