Reference fields are suddenly stopped working on incident form

[Community Alums]

Hi All,

Caller, Assignment group, Assigned to and configuration item fields of incident table are stopped working as expected. Meaning am not able to select the value in it.

Referred the KB: https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB0993490 (it dint worked for m...

Could anyone please guide me on this..

Any help is appreciated!

Thanks in advance!

[Community Alums]

No i have not created any UI actions.

[Community Alums]

Thanks all for the inputs!