The sequence was shot with a body double for Harrison Ford taking on the role of Indiana Jones.
And so it’s possible this sequence was originally designed to include more of Harrison Ford but the body double was needed in order to get the shots and to prevent significant filming delays.
He reportedly hurt his shoulder or arm while rehearsing an action sequence, and has been seen in London wearing a sling.
While this scene may have expected to use a body double all along, Ford does not appear to be back on set yet following his own injury.