Shopify Bottom Bar issue on Google App (iPhone)

This is about the bottom padding issue under the Bottom Bar when a Shopify website using Navi+ is opened inside the Google App on iPhone.

When accessing a Shopify website that uses Navi+ (or any application with a fixed bottom menu, floating buttons, etc.), users opening the website inside the Google App on iPhone may sometimes see an unusual white space appearing at the bottom of the screen.

This issue only occurs in the Google App and is not caused by Navi+. Below is a clear and simple explanation.

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1. Where does the issue occur?

The issue only occurs when:

• The website is running on Shopify

• There is a Bottom Bar (Navi+ or any other app), or a Floating Action Button (FAB) such as chat widgets, loyalty buttons, etc.

• The user opens the website via the Google App on iPhone (usually by searching and tapping into the website)

The issue does not occur when opening the website using:

• Safari (iPhone’s default browser)

• Chrome

• Facebook Browser

• TikTok Browser

• …

This confirms that the issue comes from the Google App on iOS.

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2. Why are Shopify websites using Navi+ more likely to experience this issue?

The Google App uses a special way of rendering websites (Apple’s WebView). This rendering engine has a long-standing issue when calculating the real height of the screen in websites that have:

• A fixed Bottom Bar

• HTML or UI generated dynamically by JavaScript

• Complex layouts like Shopify (multiple container layers & constantly changing sections)

When these conditions occur, Google App may miscalculate the actual viewport height and create a fake bottom padding.

➡️ This is why the issue appears more frequently on Shopify websites using Navi+ or other bottom bar/FAB apps.

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3. Is this a Navi+ issue?

No. This is an inherent bug of the Google App on iPhone, and it has existed for many years.

Even if Navi+ is disabled, other Shopify apps that display bottom bars or FABs still experience the same issue inside the Google App.

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4. Evidence that this issue cannot be fully fixed

• Many Shopify apps that include a bottom bar or FAB experience the exact same issue.

• Even some built-in Shopify features show similar behavior inside the Google App.

• This is a well-known problem in the developer community, but the Google App has not addressed it.

• The issue disappears as soon as the user taps anywhere on the screen → Google App forces a re-render and recalculates the correct height.

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5. Navi+’s current solution

Navi+ has researched and tested multiple approaches, but because the issue originates from the Google App itself, it cannot be completely resolved.

However, Navi+ has implemented the best possible mitigation:

✔️ The issue only appears the first time

It usually occurs when the user:

• opens the website inside the Google App

• and navigates or taps anywhere on the page

When this happens, Navi+ triggers a one-time correction mechanism. As soon as the user:

• lightly taps the screen

• scrolls a little

• or interacts in any small way

✔️ The issue disappears automatically

The Google App will re-render the entire layout, and from that moment:

• The Bottom Bar displays in the correct position

• The issue will not appear again until the Google App is closed and reopened

✔️ This mitigation also reduces similar errors from other bottom-positioned apps when used together with Navi+

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6. Quick explanation for end users

This message is designed for non-technical users:

“The Google App on iPhone has a display bug when opening Shopify websites that use a Bottom Bar like Navi+. This issue comes from the Google App and affects many apps, not just Navi+. It only happens once and will disappear after any tap or scroll on the screen. If you use Safari or Chrome instead, the issue will not occur.”

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7. Conclusion

❌ Not a Navi+ issue ❌ Not a Shopify issue

✔️ A display bug in the Google App on iPhone ✔️ Navi+ minimizes the issue so it appears only once and then disappears ✔️ Safari/Chrome are fully unaffected