Play does not play correctly and/or crashes when channels have differing pattern lengths.

[Mike Welsh]

If Channel A and B have patterns that aren't aligned, the Play button will often play one channel from an incorrect position.

In the worst case, this will cause TIA Tracker to crash.

Attached is an example file with each channel having varying pattern lengths. Playing from Channel A, 2: Pat2 Note 1 will have Channel B playing from an incorrect position. Playing fron Channel A 2: Pat2 Note 5 causes TIA tracker to crash.