[tomasdore]

As their boss, could you ask them to document their problem, in something like Slab, to the point where it is clear what they are requesting (like a good, or great, request on Stack Overflow, rather than "I'm stuck"). Then they tag you, you do the minimum to pass it back to them (in the hope they can take it from there). You then have documentation for the next guy.

Optionally, you could put an interim step where someone else on the team is given the chance to advance it; might keep it from your doorstep. But I don't know if that'd help in your situation!

I've assumed that the problem is with them, not you, as that's how you wrote it. But if you have (possibly) set a tone where their solutions work but not as well as yours and are switched because it's not done as well as you'd do it, then it's on you (possibly?)! :-)