Yesterday I was calculating some Butterworth filters and experienced some weird Math-o-mir behavior. Inter-character spacing in numbers (spacement between digits) was displayed erratically. As I was editing, or changing zoom level, the inter-character spacing changed in a non-causal way. For example, a number 1000 might be displayed either as   1   0   0   0 , or in a very condensed form where digits would overlap. I couldn’t find any regularity in this behavior – seemed like non-initialized variables or a memory corruption.

If you had a similar experience with Math-o-mir, let me know. I am interested to learn from what version does this bug exist and how often it is experienced.