How Do Teams Fix "Reviewers Can't See the Feature Running"?
Short answer: Teams fix "reviewers can't see the feature running" by giving every pull request a real, automatically deployed environment with a shareable URL — the reviewer clicks a link and interacts with the actual running feature, instead of approving based on reading a diff and trusting it works.
The Actual Gap
A diff shows what code changed. It does not show what the application does when someone clicks through the new flow — which is precisely where UI bugs, broken edge cases, and cross-service issues hide until someone actually runs it.
The Fix: A Link, Not a Description
Every PR environment gets a real, public URL automatically:
1$ bns environments endpoints --id 5bDn8MrEgm
2Name | web
3Endpoints | https://web-jfq6ir.bunnyenv.com/That link goes directly on the pull request — posted automatically by the Git integration — so a reviewer, PM, or designer can open it and see the actual feature running, not a description of it.
Beyond Engineering Review
This closes the same gap for non-engineers: a product manager doesn't need to read code or run anything locally to review a feature — they open the link. This is the same mechanism that supports demoing unreleased work to stakeholders without a special "demo build" process.
For the complete open → deploy → review flow, including how the environment stays in sync with new commits, see Automated PR Environments for E2E Testing.
Frequently Asked Questions
Isn't reading the diff enough for most code review?
For small, isolated changes, often yes. For anything touching UI, cross-service behavior, or a flow with several steps, a diff shows what changed in the code, not what the running application actually does — which is exactly where bugs hide until someone clicks through it.
Who besides engineers benefits from a clickable preview link?
Product managers, designers, QA, and support/customer success can all review a feature directly without needing to read code or run anything locally — the link is the review interface.
Does the reviewer need any special access to open the link?
No special access beyond the link itself by default, though IP allowlisting or authentication can be added for environments that should not be reachable by just anyone with the URL.