Yes, that's what I meant by it's part of the nature of having one-off buttons at all. Summing up, there are three problems or potential problems here: 1. We don't clear the one-off selection when you start typing. That might not be a bug, but it's a change from awesomebar that might have been unintentional. 2. We don't select the heuristic result when you start typing while a one-off is selected. This also might not be a bug, but it would make it clearer what happens when you press enter. 3. The "Search with" text and favicons in the heuristic and private-search results revert to the default engine when a one-off is selected and you start typing. That's bug 1615470.
Bug 1615149 Comment 8 Edit History
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Yes, that's what I meant by it's part of the nature of having one-off buttons at all. Summing up, there are three problems or potential problems here: 1. We don't clear the one-off selection when you start typing. That might not be a bug, but it's a change from awesomebar that might have been unintentional. Edit: It's particularly weird when the one-off settings button is selected. 2. We don't select the heuristic result when you start typing while a one-off is selected. This also might not be a bug, but it would make it clearer what happens when you press enter. 3. The "Search with" text and favicons in the heuristic and private-search results revert to the default engine when a one-off is selected and you start typing. That's bug 1615470.