What packages are incompatible with KOMA-Script?

Triggered by the question why should I not use the koma script classes results practically necessarily a consequence question: What packages are incompatible with KOMA-Script?

KOMA-Script offers scrhack to fix certain well-known problems with the packages:

• hyperref,
• float,
• floatrow, and
• listings.

In the question incompatibilities between babelfrench and koma script classes? special problems of \usepackage[french][babel] are reported.

Which packages do you know having problems with KOMA-Script?

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geometry resets the from typepage calculated margins if you don't use the option pass (for showframe). –  Qrrbrbirlbel Sep 19 '12 at 18:49

Marcus Kohm, the author of KOMA-Script (see his initials), utters about this frequently, but unluckily for TeX.SE usually in German.

Also I would prefer to say, some packages are not fully compatible instead of they are incompatible, because in most cases they work partially and often there’s a workaround.

• Every package, that makes a redefinition of titling and heading, is potentially not fully compatible. A well-known example is titlesec, where here on TeX.SE we have already a related question: Incompatibilities between KOMA-Script and titlesec.

• Also packages with a heavy redefinition of footnote related stuff are potentially not fully compatible. I myself noticed, that footnotebackref only works with an active symbol (the footnote number is not turned into an active link, confer package manual).
By the way: This works fine:

\usepackage[symbol=\${}^{\scriptscriptstyle\uparrow}\$]{footnotebackref}% needs "hyperref"

• The caption package is according to its package documentation not fully compatible. But actually this was quite more serious in older versions both of caption and KOMA-Script (see also comment below of caption author Axel Sommerfeldt).

As scrpage2 is part of KOMA-Script (but is a package and can be used with other classes!):

• Package xwatermark relies on fancyhdr, so with scrpage2 you will get error messages.
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Regarding my caption package: The optional argument of \setcapwidth (offered by KOMA-Script) is the only thing I'm aware of which is not supported when loading the caption package. Especially everything (commands & options) the caption package offers IS compatible with the KOMA-Script document classes, and I'm trying hard to keep the caption package as compatible with KOMA-Script as possible. So in fact the caption package supports the KOMA-Script classes. –  Axel Sommerfeldt Sep 20 '12 at 5:44
@AxelSommerfeldt: Yes, you wrote about that in the manual, and because of that I referred to it. –  Speravir Sep 20 '12 at 16:23
I for my part would say “to be expected” instead of “not fully compatible”. When I load a package like titlesec and use it to redefine \chapter, say, I cannot expect that KOMA's definition still holds... the same is true for footnotes. –  clemens Sep 20 '12 at 17:25
@cgnieder: What? :-) It’s a different point of view, I guess, but feel free to rephrase my writing. (My English is not the best on earth.) –  Speravir Sep 20 '12 at 17:34
No, that's not what I meant. Your point of view is a valid one! I just wanted to say that (and why) I see it differently. –  clemens Sep 20 '12 at 17:42