Hey, I have a Heliboard question and not sure if this is the right place to ask, sorry.

I have three system languages in my phone. The three of them shows in Heliboard. I added three dictionaries, one for each. If I start typing using a secondary keyboard all words shows underlined in red. I see some words in the recommended area that seems to be correct but no matter the word selected it always shows underlined in red. This only happens for the second and third keyboard.

Is this how it suppose to works? Any inputs?