[Haskell-cafe] Strange encoding issue with Text and Servant

Hi, I have got a two places with a `QueryParam "q" Text` and call it with a Text that contains a `=` literal. In one place the `=` is correctly encoded as %3D, in the other I see a `!D(MISSING)`. This has to happen somewhere in Servant or the lower layers. Both Texts print out nicely with an `=` sign if I just print them to stdout. Google does not find `!D(MISSING)` anywhere. Any idea what could possibly be the problem here? Best Jan