cubicweb-preview #13414436 when previewing on a ne tab, the last request of the trampoline does not set the content-type header [validation pending]

some browser will display it as raw html

prioritynormal
typebug
done in1.2.3
load left0.000
closed by#0287576624a2 [controller] ensure content-type header is set on new tab previews (closes #13414436)
patch[controller] ensure content-type header is set on new tab previews (closes #13414436) [applied]