[LoadingButton] Displaying incorrect warning

[songhobby]

Current behavior 😯

<LoadingButton loadingPosition="start" .. .>...

This would prompt a warning

Warning: Failed prop type: MUI: The loadingPosition="start" should be used in combination with startIcon.'

However, the default loadingIndicator is used and a startIcon is not necessary here

Expected behavior 🤔

No warning

Steps to reproduce 🕹

No response

Context 🔦

No response

Your environment 🌎

No response

[andrebnassis]

Here there is a repository with a LoadingButton sample that you can reproduce the warning message:
https://github.com/andrebnassis/my-lab/tree/issue/mui/31365

[shkhalid]

+1

[nishina-y]

+1

[buzzb0x]

Hi there, any updates on this? Has this been fixed already? I'm on @mui/lab@5.0.0-alpha.105 and the warning is still present

[CorentinR3]

+1

[baki-kucukcakiroglu]

+1. I can confirm this issue still exists at "@mui/lab": "^5.0.0-alpha.142".

[ZeeshanTamboli]

It works well in Joy UI without any warning. See - https://mui.com/joy-ui/react-button/#loading-position.

[mmoreno2-rbi]

+1

[andrew-amp]

+1