SeedRnd

Using seeds of $7FFFFFFF or $FFFFFFFF with SeedRnd cause Rand(n1,n2) to always return n1.

SeedRnd $7FFFFFFF
For randnum=1 To 15
Text 0,randnum Shl 4,Rand(10,50)
Next

Since this only involves the highest and lowest integers, I think it suggests an overflow thing.

Don't think my Window system is relevant.

This apparently fell through the cracks. The same bug in BlitzMax was fixed ages ago.

Analogous changes should have been made to BlitzPlus and Blitz3D.