Narrowed down a recorded scripts tinderbox failure to a localization problem that the tests identified. Unfortunately, the problem only happens on the tinderboxes. Spent quite a bit of time convincing various people that the problem was real, worth understanding and worth fixing correctly. Pje finally got to the bottom of it and bear implemented a fix.
Narrowed down another problem that only reproduces on the recorded scripts tinderboxes. This problem is unrelated to recorded scripts. So far I have verified that the trunk running on the recorded scripts tinderbox also exibits the problem, but I don't yet have a solution.