The 18 Pages I Missed: How Template Drift Broke a Widget Across 70 Pages
This is the debugging story behind the 70-page deployment bug I mentioned in my previous post — and the full forensic breakdown of how structural drift can quietly defeat perfectly functional code.
We run a live crypto price ticker across every page of our static news site.
The JavaScript is just 2.1KB. It uses Binance’s public API. No API keys. No complicated infrastructure.
Clean. Lightweight. Simple.
Or so I thought.
Then I noticed something embarrassing.
The homepage was showing Bitcoin prices from August.
Meanwhile, newly published articles were displaying perfectly current prices.
Same website.
Same widget.
Same JavaScript.
Completely different result.
The Diagnosis
The widget was designed to target one specific element:
<div id="priceTicker">
If that exact ID exists, the script works.
If it doesn't exist, the script silently does nothing.
No visible error.
No warning.
No fallback.
Nothing.
And that’s where the real problem was hiding.
Our site hadn't actually been built from one consistent template.
Over time, the page structure had evolved through three different generations of templates.
The JavaScript hadn't broken.
The website structure had drifted away from the assumptions the JavaScript was making.
And buried inside those older template versions were 18 pages I had completely missed.
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