[Pharo-users] Debugger highlinting (in Pharo 8)

Dear all, I have some packages for Pharo 8. The debugger highlights the code wrongly - it highlights the code three, four or more characters to the right (further) as it should. Can this be a result of Cr & Lf incompatibilities between different operating systems, or something else? How does Pharo highlight the code, I mean on the basis of what..? Thanks in advance for any help. Tomaz