Comment 2 for bug 848509

Attached is a version of one of my design files that has a pile of DRC bugs, from a point in history when this bug was biting me badly.

For example. run DRC on this board, then fix the first "potential for broken trace" issue, and hit refresh. The error may not show up in the list of DRC problems found again, but the displayed geometry will be reset to before the fix was made!

This design is under the TAPR Open Hardware License, by the way, and the current version is at git.gag.com in the hw/teleterra repository.