Afaik, Die Linke still have anti-NATO stance in their program and call for it to dissolve and a new collective defense pact be created with Russia in it, which was an eyeroll to me, given the war, cyber attacks and everything.
Edit: I last read some of that program in 2024, so not sure what’s their stance lately on this.
What you're probably referring to is still in there, except they're not asking for a new defense pact with Russia in it, they're asking for a security system (with Russia in it). (page 89)
On the same page, they're also asking for the UN to be improved, specifically noting the security council. That's directly to the detriment of its permanent members, including… Russia.
P.S.: I profit monetarily from NATO, yet still think it's broken, but for reasons diametrically opposite to Die Linke: I think the US won't deliver as NATO member. It doesn't matter as long as US interests are the same as NATOs, but, … if Russia attacks the Baltics? I'm not gonna hold my breath for US NATO troops.
Edit: I last read some of that program in 2024, so not sure what’s their stance lately on this.