Tulpas can have emotional issues and problems like anyone else. Apollo had bad anger problems for a long time, but that didn't make him "evil." It made him human.
another problem with that is that you'll want to covet their traits.... so even if they somehow do accept every single thing you personality forced on them, you're likely to try and force them out of that personality, in a sense
The answer would be "yes, but not intentionally". It's certainly possible that a tulpa cuold end up being your vision of an 'ideal person', but there isn't really a way to intentionally create a tulpa in such a way.
In addition, people's ideas of an 'ideal person' are commonly distorted and lack consideration of scenarios where the mix of traits in the aforementioned 'ideal person' cause problems.