Indeed, I would report it as a bug using the link below:
As for a workaround, I can think of a couple of possibilities.
1. Create a totally new and different topic for one of the Demonstration topics. Then link it to the TOC. Then configure the topic to redirect to the Demonstration topic you want. Ensure the Demonstration topic you want does not appear in the TOC.
2. Similar to earlier, create a new and different topic for one of the Demonstration topics. Then link it to the TOC. Then remove everything from the topic and insert an Inline Frame and configure the Inline Frame to present the Demonstration topic you want.
Thanks for your suggestions, and sorry for the delayed response. Had some other priority stuff and this kind of went to the back burner. For now, we could rename the topics and that works fine. If we can't find an alternative name, we will use one of your suggestions.
I logged a bug report on that. Adobe was able to reproduce the issue. While they investigate, they suggested me to set the Synchronize TOC option to manual under WebHelp Settings > General. This also works fine.
However, I am just curious about one thing. If not in this scenario, when will we use this Sync TOC manually option and what are the pros and cons of it compared to the Automatically option.