Alex, unfortunately that's the wrong bushing. 6819057 is the updated bushing for the updated control stay rod and definitely not the same as the 1359599 bushing that you need for your original control stay. Ref the FCPEuro website parts selector for any year 940 and you'll see the note about that. I got my part numbers and superseded part numbers off Volvo dealer parts websites as well as the lengths. I saw a number of aftermarket websites that are incorrect or misleading about that bushing. A parts person sees the word 'updated' and incorrectly assumes that means 'supersede'.

As I said, your control arm looks fine. The bushings will not push in all the way by hand. The way to get them to fully seat into the eye is to tighten the nut. It's a poor design and the 700/900s have long had front end brake shudder and handling issues because of those bushings. The updated control stay still wasn't ideal. You can read about that on the IPD website where they list their adjustable control stay rod that comes with poly bushings. Their poly cone bushing cannot be used with the Volvo control stays.
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Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now