Unable to search or access any sub pages is a very annoying bug. It is recommended that the official urgently fix this bug or create an offline file of help documents for people to download.
If there is only an online version, then at least the stability of the webpage should be ensured, otherwise it is better to provide an offline version of the help manual.
The address of a problematic website and screenshot.
https://docs.unrealengine.com/4.27/en-US/PythonAPI/class/_ObjectBase.html
