I have experienced issues with props and motors on hexa and octocopters.
Handled rather well, especially the octocopter which I guess is hardly a surprise. That’s why until 2 years ago was reluctant to build & fly quads. But apparently depending on available power (thrust) this is also possible to safely land these days.
( I believe this is due to development of support for two rotor type aircraft in recent years)
See this report regarding a motor loosing power in a quad: