@Michel-Daoud Hello, Iike @Claudia-Frank said, it is normal behavior. I don’t think you can have this behavior using np++ options or even TextFX autocomplete behavior.
However, it’s possible to achieve this behavior using a plugin : XBrackets.
I invite you to download it and try it out. In the settings of the plugin, you should see “Even if corresponding right brackets exists”. Check that too, and it should work the want you want it.
Hope I could help.