For the second problem, what firmware are you on? Kobo recently changed the selection and lookup so that the selection mode doesn't exist. You select a word, it gets highlighted and the dictionary pops up. When you press on any other text, the pop dictionary popup disappears and the selecting mode menu closes. You can still adjust the selection before saving a highlight or using the other search options. This happened with either 2.9.0 or 2.10.0.
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