TL;DR: The worst CI failure mode isn't a red build — it's a build that looks like it never existed. You push a tag like `v2.

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What's in this article

The Error That Wastes Half Your Afternoon

Quick Background: How Dynamic Config Actually Works (and Where It Can Break)

Setting Up the Baseline: Your config.yml and continue_config.yml

The 'No Workflow' Error: Five Actual Root Causes

Debugging Workflow: How to Actually Figure Out What's Wrong

The Fix: Working Config for Tag-Triggered Dynamic Pipelines

Things the Docs Don't Tell You (But Should)

The Error That Wastes Half Your Afternoon

The worst CI failure mode isn't a red build — it's a build that looks like it never existed. You push a tag like v2.4.1 , watch the CircleCI dashboard for a few seconds, and see... nothing. Not a failed pipeline. Not a warning. Just the tag sitting there, completely ignored. You refresh. Still nothing.…