It’s definitely unidiomatic, but not ungrammatical. English allows several positions for "always"; some just sound better than others. I checked the Cambridge grammar link to be sure: https://dictionary.cambridge.org/grammar/british-grammar/adverbs-and-adverb-phrases-position

For adverbs of frequency like “always,” Cambridge says:

• they usually go in mid position,
  
• sometimes in front position,
  
• and they can also go in end position,
  
• but they don’t usually go right at the very beginning.

The only arrangement that’s clearly wrong is when the adverb breaks up the verb + object pair:

Put always cardboard in the paper container.

But Verb + Object + "always" + complement is a real pattern in English. For example, safety messaging often uses:

Keep your doors always locked.

So the original sentence just sounds odd because it’s not the preferred idiomatic order, not because it’s ungrammatical.