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Ibuprofen: spot the regiochemistry flaw

Single question

Here is the three-step BHC route to ibuprofen: Friedel-Crafts on isobutylbenzene, reduce the ketone, then carbonylate the alcohol. One of the steps draws the new bond in the wrong place. Watch the regiochemistry on the first ring substitution.

Friedel-Crafts acylation
Ortho/para vs meta directing effects
Alkyl group directing behavior

Find the flaw

Click the step that contains the flaw, or pick “No flaw” if you think every step is correct.