The TKAutoCompleteTextView has a complicated structure, the behavior depends on the setup you have used. Right now I cannot say much because I do not have your code sample and it makes the task quite abstract.
What I can advice you is to consider which will be more appropriate to use in your case TKAutoCompleteController or just the TKAutoCompleteTextView, the controller should simplify your hierarchy
and reduce the chance of layout conflicts.
If you can send us a code sample or a example project with the isolated issue, we will be able to say where the issue is coming from and possibly how to resolve it.
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