I tried with latest firefox and latest Chrome both of them have no issues displaying the captcha in account creation with the following settings:
1. TB side of things - only account creation, 1.1.0 and Warehouse and on other websites - edge before 1.1.0 and Warehouse
2. module side of things - yes, 0, 0, 0, 0, yes till the end.
If you switch to any number above 0 on Login attempts the captcha is shown but ignored - I had the same issue with the module - lots of Russian bot regs but it is a known bug since then. Think @datakick found out. it should be fixed soon.