Missing documentation when hitting F1

Steps to reproduce:

• start Creator with clean settings, add qt.qch documentation from QtSDK via SettingsDialog
• open a project that contains some Qt classes (or create a simple one)
• place the text cursor on any Qt object and hover the same one with the mouse cursor - ToolTip with information and the 'F1' picture should appear
• hit F1

Expected behaviour:

• Creator should bring up the requested page

Current behaviour:

• Creator shows a Page not found

See also attached picture.