[forms] In the titles and text forms, certain tags are parsed but they are either ignored or their content disappears

[Former user]

[code][/code] tags are parsed and removed, but completely ignored (and [pre][/pre] is not recognized) [table][/table] tags are parsed and their content disappears.

[Jelmer van der Linde]

Mostly fixed in b006b2f. [code] implies [pre], and [table] is just really, really finicky but does work.