Can't find any corrupted Nexus towers/areas in map - bug?

I've been searching everywhere for a corrupted nexus to complete the next chain of quests but it's literally not showing up anywhere. I've even tried searching through the fog to see if there's vines near the tower in fog like another Reddit post mentioned. Is this a bug or am I missing something?

Current Quest: Complete a tier 12+ corrupted Nexus
Furthest North of Map:


North part of Map:
https://www.reddit.com/media?url=https%3A%2F%2Fpreview.redd.it%2Fcant-find-any-corrupted-nexus-towers-areas-in-map-bug-v0-e1mdov4lxjsf1.png%3Fwidth%3D2550%26format%3Dpng%26auto%3Dwebp%26s%3D49cccec4692fc4890fcd09dba416fbc2c2755e1f

West part of map:
https://www.reddit.com/media?url=https%3A%2F%2Fpreview.redd.it%2Fcant-find-any-corrupted-nexus-towers-areas-in-map-bug-v0-2kl0mv7sxjsf1.png%3Fwidth%3D2544%26format%3Dpng%26auto%3Dwebp%26s%3Dba4df6f7f6432fb8e26f603004ee7bd05a9dcdc7

South part of map:
https://www.reddit.com/media?url=https%3A%2F%2Fpreview.redd.it%2Fcant-find-any-corrupted-nexus-towers-areas-in-map-bug-v0-rk4w0ulvxjsf1.png%3Fwidth%3D2558%26format%3Dpng%26auto%3Dwebp%26s%3D23631f0e9a9e1593d4f44eb6c97c913734d153e4

East part of map:
https://www.reddit.com/media?url=https%3A%2F%2Fpreview.redd.it%2Fcant-find-any-corrupted-nexus-towers-areas-in-map-bug-v0-mzbtg1nwxjsf1.png%3Fwidth%3D2546%26format%3Dpng%26auto%3Dwebp%26s%3D18eaef77d2677a7853c8e5705ee0bbb6fb7f5872

Any solutions?