While fixing my website today, I ran into a very strange bug.

There is a piece of simulated climate text on the page. It was only a small thing in the background, meant to create a faint sense of a telemetry terminal. When it works normally, it is ordinary: temperature, radiation, oxygen level, pollution status, acid-rain warning, like the remaining interface of some post-disaster ecological monitoring station.

Whenever I refresh the page, it is normal.

But as soon as I open another page, or leave the website running for a while, then look back at it without thinking, it breaks.

Not completely. Not the kind of collapse where you can tell at a glance that the page has failed. It only begins to shift slightly. Characters repeat. Words erode into one another, like a signal worn down by rain, dust, and time after a long transmission. The once-clear POLLUTION turns into a twisted fragment. ACID RAIN is stretched into an echo almost beyond recognition. In the end, only OXYGEN DEPLETION still floats there stubbornly, like a system still trying to report the most important disaster before it loses the ability to speak.

My first reaction, of course, was to fix it.

Timers, residual state, component unmounting, route changes, random text generation — I checked, one by one, every place in the frontend where something might have gone wrong. The bug could be fixed. The problem was that once it was fixed, it no longer looked good.

I tried to redesign the effect. I simulated character drift, controlled the density of noise, preserved keywords, added terminal-style line breaks and symbols. The logic was cleaner. The performance was more stable. Visually, it was more “correct.” But something was always missing.

Later, I realized that what was missing was the bug itself.

A designed failure often knows it is playing the role of failure. It deliberately creates garbled text, scanlines, misalignment, jitter, as if constantly reminding you: “Look, I am broken.” A real bug is different. It has no desire to perform. It simply keeps running incorrectly, inherits the previous state incorrectly, and leaves something on the page that should have been cleaned away.

It does not know it looks good.

And precisely because of that, it feels closer to real damage.

A lot of beauty may come from the same place. Light leaks on old film, distortion on magnetic tape, burn-in on CRT screens, image blocks left by compression damage — none of them existed to be beautiful at first. They were wounds left by material, devices, algorithms, or time. Later, we can simulate them, but it is hard to recreate the natural feeling of that first loss of control.

Because human imitation is always a little too clever. And the most fascinating part of a failure is exactly that it is not clever.

So in the end, I did not want to fix it completely.

Of course, the code still has to be healthy. Timers cannot stack forever. State cannot leak. The page cannot keep getting slower the longer it runs. Those are the parts that truly need repair. But that abnormal text generated by accident — I want to keep it.

No longer as a bug continuing to run out of control, but as an old log preserved.

A record of the time when a webpage truly broke.

It is no longer an effect, but a relic. A small piece of evidence proving that, one afternoon, this system drifted away from its designer’s intent, and in its error, briefly grew an expression of its own.

That is probably why I like it.

A normal interface only says: someone finished the design. This glitch seems to say: the system was alive for an instant.