How can I separate boards that seem to be sharing a sprint?

[NL]

I have 2 separate teams boards that have sprints running concurrently. When I edit the sprint goals on individual boards, it changes the goal of the other board. Looks like they're sharing a sprint but filters are different. 

[Mark Segall · Accepted solution]

Hi @NL - Sprints spanning multiple projects are a feature of Jira as some teams structure their projects so that each correlates to a micro service and those micros services are then grouped by accountable team.  This way one scrum team can span multiple micro-service projects and thus share a single sprint across all of those projects.

Now to your question...  If you don't want this behavior, one of the two projects needs to "give in" and create a new sprint naming scheme that will be used for their activity so you can establish the isolated sprints.

[Ivan Lima]

Exactly. My two cents: kb that discusses the situations where a sprint may show up on multiple boards:

https://confluence.atlassian.com/jirakb/sprints-appearing-on-multiple-boards-in-jira-server-779159068.html