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Cumene process: spot the regiochemistry flaw

Single question

Three-step cumene process to phenol: alkylate benzene to cumene, air-oxidize to the hydroperoxide, acid-cleave to phenol plus acetone. Step 1 is drawn as a dialkylation. Check where the second isopropyl goes.

Friedel-Crafts alkylation directing effects
Alkyl groups as ortho/para directors
Polyalkylation control in the cumene process

Find the flaw

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