On Policy | Sub interface is not showing on Incoming

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We are using Fortigate 100D

While configuring policy, Lan Subinterface is not showing on incoming interface.

Subinterfaces is configured on interface lan. and also theres subinterface of dmz(interface) but it dmz sub showing on policy incoming interface.

Please see the attached photo for reference.

any idea ?

thanks

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Tried clearing browser cache and also tried using different browser but it's still not showing.