If you believe it's more than RoboHelp for Word, you are asking in the wrong place. In other words, the issue is likely on the developer's end if it isn't with RoboHelp for Word, right?
As Colum correctly intimated in his reply to your other post, check your mappings and ensure they are correct. Assuming they are, the only other reason it wouldn't work is becuase something changed in the application.
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This is helpful because I believe it never worked which would be the application. The F1 key works everywhere else and in all 8 other modules.Obviously if the answer is no it did not work, it has nothing to do with RoboHelp, I just found a bug in the ap which is my guess. I just don't know yet and wanted to check my work first. Thanks.
Just confirmed is an application bug...thanks.