Is it bad form to tell to the team lead when a co-worker is refusing to hand-over a task? That is, is escalating an issue regarding who does what when (i.e. not a technical issue that can be debated on merit) to low management constructive or not?
I'm new on a project full of messy legacy nonsense, so I tend to be stuck on something that involves information kept around as "folk wisdom" regularly. I'm currently hung up on being unable to get FooApp to run, and now deploying my first changes to BarApp to the test machine. I asked the coworker that's to onboard me to check if FooApp even runs for him to see if it's just me, and he's been putting it away since last week, and now found out it indeed doesn't run from a clean checkout with the docs he's written, and is determined to resolve that with a senior. I've asked him to just let me talk to the senior in question since I know as much about that issue as he does, if the extent of what he knows is some documentation that hasn't really been verified, and to take over the deployment since that's what he does regularly. This after checking with the supervisor if that's a good idea, who told me that that's what how actually meant us to do things in the first place - the coworker wasn't to take over the FooApp issue entirely, just do a sanity check for me if it's my setup given that the issue I've been facing doesn't seem related to it.
I've now flat out told my coworker the boss said we're to switch tasks, and he said no, and probably flat out made up an excuse - blaming the senior setting some vaguely defined conditions on helping us out - to justify this; this while passively aggressively telling me I can just message the senior myself, without sharing anything they've found out so far with me. (I did message said senior, all he had to say is "well it works on my machine I dunno what more I can tell you", so I suppose I'm not missing out on much.) Earlier the coworker also tried to get me to verbally approve that it's right of him to focus on FooApp first, because the senior is leaving the company soon; I've refused him because it came across as wanting to cover his ass by shifting some of the blame for acting willfully.
I'm kind of exasperated, it's clear the coworker is being obstinate for whichever reason, and don't know what other options I have beyond either doing the same thing he does in parallel to "race" him to a fix; or pressing the issue to the supervisor to get him to tell the coworker to do the other thing. The latter feels like a political move, especially if the coworker's job is already precarious because of a history of playing fast and loose with responsibility.
(FWIW I'm leaving the company soon because I just don't feel like dealing with this sort of nonsense, I just need some survival tips until my notice is due.)