Director and Windows XP where I work. When it opened 15 years ago the technology was very futuristic. It is currently in danger of turning into a museum of museum interactives as there was never any budget for refresh, despite initial promises.
All the interactives were designed off site and delivered as (effectively) black boxes, no source code supplied. Since many of the companies involved have "moved on" since, some bugs in the software which have been there since day one cannot now be fixed.
One interactive for example, at least once a day one of the two videos it plays stutters. The video lasts six minutes or so (about 10 when it's stuttering) and after that it's fine. The other video never (as far as I'm aware) does the same thing. There seems to be no rhyme or reason to the stuttering, it just happens randomly.
Another interactive under certain very specific "high load" conditions (i.e. there's a school party mashing the thing about) pops up a filer box asking where to find one specific asset. There must be one code path where the name of the asset is mis-spelled or something because the same asset is used quite a lot, but without the source code we can't investigate.