When playing a mission that uses tickets you can have an automatic ticket counter icon that displays above the sector Icons.
This icon only supports double digits then it does a line break and new digits are on a new line.

The icon is not high enuf for double lines.

An example is 100 tickets looks like this
10
0

Sugestion would be to increase the allowed digits to 0000 before the line break to allow for a max of 9999 tickets