RH 2020 Responsive HTML5: "Enable substring search" setting ignored

[#1]

Running RH 2020.1, generating Resonsive HTML5 with Azure_Blue.

In my output settings, Enable substring search is disabled (i.e., NOT selected).

• My project has topics that contain text instances of tc and tcs. These are meaningul text strings for our audience.
• If I search on tc (no quotes, Include all words in search NOT selected), my search results include topics that have instances of tcs - indeed, it's even displayed and bolded (all 3 chars.) in the results preview. 
• If I search on "tc" (quotes, Include all words in search NOT selected), my search results still include topics that have instances of tcs - however, only the first 2 chars are bold; interestingly, preview inserts a space between the tc and s.
• If I search on "tc" (quotes, Include all words in search IS selected), my search results are IDENTICAL to the search performed immediately above this one: still include topics that have instances of tcs - however, only the first 2 chars are bold; interestingly, preview inserts a space between the tc and s.

Please advise. 

[#2]

Running RH 2020.1, generating Resonsive HTML5 with Azure_Blue.

In my output settings, Enable substring search is disabled (i.e., NOT selected).

• My project has topics that contain text instances of tc and tcs. These are meaningul text strings for our audience.
• If I search on tc (no quotes, Include all words in search NOT selected), my search results include topics that have instances of tcs - indeed, it's even displayed and bolded (all 3 chars.) in the results preview. 
• If I search on "tc" (quotes, Include all words in search NOT selected), my search results still include topics that have instances of tcs - however, only the first 2 chars are bold; interestingly, preview inserts a space between the tc and s.
• If I search on "tc" (quotes, Include all words in search IS selected), my search results are IDENTICAL to the search performed immediately above this one: still include topics that have instances of tcs - however, only the first 2 chars are bold; interestingly, preview inserts a space between the tc and s.

Please advise. 

[#3]

I have flagged this thread with Adobe so hopefully someone will come along with some answers. These are not questions that forum users can answer.

[#4]

They will be looking at another thread so you might want to add a link there to this thread.

[#5]

Thank you!

[#6]

Circling back on this. I've since upgraded to 2020.3 and it's still an issue - even with "Auto correct search query" and "Enable substring search" both disabled. Here's an example - note how "tc" is bold in the search preview/context of the result (btw, this topic doesn't have an instance of "tcs" in it - anywhere), even though "tcs" was the search term.

[#7]

I have flagged this thread with Adobe and they will be responding.

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