Is Agent Engine sanitizing/stripping markup/html tags from the generated text parts?

I have an AdkApp() agent running Agent Engine which is instructed to produce generated text with inline citations around each claim. Those inline citations are formatted similar to html markup syntax like so: <cite> some claim </cite>.

But when I run it on agent engine, all of the markup syntax seems to be stripped. Am I correct in assuming there is some sanitization going on here?

I am expecting you must using UI,that I see

I am cannot using my phone because,edge browser does not recieve

The stripped text is observed directly via the python library within the agent response content.parts