Retractable handle operation

I purchased this item and traveled last week for my work and loved it. I had just one problem in regards to the operation of the retractable handle. I had no problem with the handle fully extending and then collapsing into the bag. It does not seem to lock into place for any of the heights between completely collapsed and full extension. Is this a problem that anyone else has reported having? I love the bag but find this is a little annoying when I do not want the handle to fully extend.

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