The 'UX Issue' Excuse: How Bad Developers Hide Critical Bugs

You are testing the new checkout flow your freelance developer just built. You add an item to the cart, click "Purchase," and... nothing happens. The button turns gray, the screen freezes, and no order is placed.

You message the developer immediately.

Their response is calm and reassuring: "Ah, don't worry about that! It is just a minor UX issue with the button state. The backend is working perfectly. Just hit refresh for now. Please approve the milestone so I can get paid, and I will fix the UI glitch tomorrow."

You trust them, so you approve the milestone and release the $2,000.

The next day, you realize the truth: It wasn't a "UX issue." The payment API was fundamentally broken, the database schema was corrupt, and your entire application is functionally dead.

You just got gaslit.

The Difference Between Frontend and Backend

To protect yourself from the "UX Excuse," you must understand the basic difference between the frontend and the backend.

• The Frontend (UI/UX): This is what you see. It is the color of the button, the layout of the page, and the animations. A true frontend bug is cosmetic: e.g., the text is slightly misaligned, or the button is green instead of blue.
• The Backend: This is the brain of the app. It is the database, the server, and the APIs. A backend bug is systemic: e.g., the payment fails, the data does not save, or the app crashes.

Bad developers rely on the fact that non-technical founders cannot tell the difference. When they fail to build a complex backend architecture, they will blame the resulting crash on a "minor frontend bug" to trick you into releasing escrow funds.

Read more: How to Win an Upwork Dispute When Your Developer Delivers Garbage

How to Call Their Bluff

When a developer claims a critical failure is "just a UX issue," you must immediately verify their claim before paying them. Here is exactly how to do it.

1. The "Show Me the Database" Test

If the developer claims the backend is working perfectly and the UI is just failing to display it, call their bluff.

• What to say: "Great! Since the backend is working, please send me a screenshot of the database showing the test order I just placed."
• If they cannot show you the raw data in the database, the backend is broken. They are lying to you.

2. The "Hard Refresh" Rule

Never accept "just refresh the page" as a permanent solution to a core user flow.

If a user has to refresh the page to see their updated shopping cart, that is not a UX issue. That is a fundamental failure in state management (how the app handles real-time data). Real users do not refresh pages; they just leave your app and never come back.

3. Do Not Accept "IOU" Bug Fixes

The absolute worst thing you can do is approve a milestone based on an IOU.

If the developer says, "I will fix this minor issue next week, but please pay me today," you must refuse. Once you release the escrow, your leverage drops to zero. If the "minor issue" turns out to be a catastrophic architectural failure, they will simply block your emails and disappear with your money.

Read more: We Pay for Results, Not Effort: How to Handle Developers Who 'Tried Really Hard'

Trust the Functionality, Not the Excuses

As a founder, you are paying for software that actually functions, not software that almost functions.

Do not let technical jargon intimidate you. If a button is supposed to process a payment, and it does not process a payment, the milestone is a failure. Do not approve the payment, demand evidence of a working backend, and never fall for the "UX Issue" excuse.