It is important that the behaviour of WebRunner is close to the behaviour of ADRIFT 5 Runner. So if the author puts a <s> in a location description to remind themselves of something, it should have no effect. It hasn't an effect in ADRIFT 5 Runner, only the WebRunner which adds a "strikethrough" through all text, similar to underline but through the center of the letters, making it hard to read.
It is the web browser that does this, not the runner.
You could use a proper HTML comment like:
<!-- s -->
The easiest way to fix it add a text override that changes every occurrence of <s> into a comment or into nothing (leave the replacement text blank).
This could be done in a library to get rid of strikeout permanently.
P.S. My new runner uses a standard HTML library so it also sees <s> as strikeout at the moment.