No, not twice. You will get a 1099R for the retirement withdrawal. It will be taxable. Then if you put it in a personal investment account and then took it out you may have to report a Sale from the investment.
You get a 1099B for sales. You only pay tax on any Gain you made (Sales price - what you put in). If you got less than you invested you can deduct a Loss.
Did you report the 1099R on your tax return? It should show up on 2018 1040 line 4b as taxable. Or didn't you report the 1099B?
