Sometimes tests fail randomly because elements on the first loaded screen are not found. When clicking on the Inspector Frame, nothing appears—there’s no information in the Hierarchy or Properties Table.
Why this happened
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Screen hasn’t fully loaded
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The first screen may still be rendering, or an overlay/loading spinner may block interactions.
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Your test tries to find elements too early → fails.
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Inspector can’t read the hierarchy
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TestMu AI / LambdaTest’s Inspector relies on the device exposing UI hierarchies.
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If the app is in a transient state (loading, overlay, or animation), the Inspector may show nothing.
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Dynamic / lazy-loaded elements
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Some apps build the first screen asynchronously.
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Elements may not exist in the accessibility tree yet.
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Platform limitations
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Real devices in cloud environments sometimes have delayed responses for hierarchy updates.
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This is normal for heavy apps (Oracle ERP, ADF apps, React Native apps, etc.)
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How to fix or avoid this
1. Wait for the screen to stabilize
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Don’t query elements immediately after app launch.
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Use either:
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Explicit wait for a loader/overlay to disappear
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Conditional wait for a key element to exist
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Example:
// Wait for element with timeout await page.waitForSelector(‘#firstElement’, { timeout: 10000 });
2. Use fresh element queries
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Always query elements after the screen is stable
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Avoid storing references too early; stale references can cause random failures.
3. Check for overlays or “glass panes”
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Some apps block the UI temporarily with invisible overlays
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Ensure your test waits until they disappear before interacting with elements
4. Retry failed steps
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Wrap first-screen interactions in a retry mechanism
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Example: try 2–3 times if the element isn’t found initially
5. Verify accessibility tree
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Some apps or frameworks (React Native, ADF, Flutter) don’t expose all elements immediately
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If Inspector shows empty, try:
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Scrolling or tapping to trigger element rendering
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Waiting a few seconds before inspecting
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