Style attribute with a map as value: doesn't evaluate code within the map

[luontola]

Input:

[:p {:style {:color (if true
                      "red"
                      "blue")}}
 "hello"]

Expected output:

<p style="color:red;">hello</p>

Actual output:

<p style="color:(if true &quot;red&quot; &quot;blue&quot;);">hello</p>

Hiccup version: 2.0.0-RC3