That happens on every bike I own.

While often possible in theory (big/small or small/big).........actually doing it isn't necessary.

You have two chainrings on the bike, use them.

It's a geometry problem of the big ring, well, being bigger. You're pulling the chain outboard towards the big ring when cross chaining in the 11t cog. The big ring being bigger, it may rub.

Going the other way, using the big ring in a a 28t cog or something......the chainring you're crosschaining towards inboard is a smaller diameter. So, it will always clear it.

It's pretty much every bike. Not just yours. Just shift the front ring for that situation and ride on.

As others have said, yes, that happens on every bike I have (except my 1x9 mountain bike) , and there is no reason for you to be in that gear. If you find yourself in the 36/11, then you should be in the big ring on the front and a bigger cog on the back.

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I would be using a CN-6701 chain.

Stop cross-chaining and your problem is solved.

Thank you all for your quick responses

Big/big or small/small is known as cross-chaining. It results in extra lateral stress on the chain, costing you watts and shortening the lifespan of the chain. In short, you shouldn't do it. (Although we all occasionally lose track of where we are on the cassette and do it accidentally).

Chain rub from the front derailleur is actually a good thing, as it is a good cue that it is time you executed a front shift.

Instead of using the 36/11, use 52/16, gear ratio is about the same and you won't be cross chaining.

you could go for a smaller big chainring by 2-4 teeth, it might clear then