Resolve overlapping tweaks

Module isolation prevents unrelated modern features from loading, but it cannot reconcile two enabled components that both own the same WordPress behavior. A conflict exists when the theme, a plugin, custom code, or another tweak changes the same output or event with incompatible expectations.

Recognize genuine overlap

Frequent overlap areas include:

• login, administration, toolbar, sidebar, and branding changes;
• redirects and access rules;
• document-head cleanup and SEO metadata;
• media filenames and generated image formats;
• WooCommerce prices, cart notices, checkout fields, order numbers, and email;
• custom content inserted into the same WordPress or WooCommerce hook.

Check for overlapping theme options, plugins, and custom snippets. Their settings are independent, so disabling a POM Tweaks module does not disable another owner of the same behavior.

Precedence is not a compatibility guarantee

WordPress normally invokes callbacks in hook-priority order. Filters also pass the value produced by one callback to the next. This can produce three outcomes:

1. compatible changes accumulate;
2. a later change intentionally refines an earlier value;
3. contradictory callbacks overwrite, redirect, hide, or reformat each other.

Knowing which callback runs last can explain an outcome, but it does not prove the combination is safe. Checkout validation, permissions, redirects, and stored order data must be correct throughout the whole journey.

Find the owner of the behavior

Use a controlled isolation sequence on staging:

1. Record the exact URL, user role, content item, and expected result.
2. Clear only caches that can preserve the output.
3. Test with the target POM Tweaks feature disabled.
4. Enable it alone and retest.
5. Add the suspected theme option, plugin, snippet, or second tweak.
6. Reverse their activation order; saved settings should not be confused with hook order.
7. Check both a positive case and a case where neither change should apply.
8. Keep one designated owner when the behaviors are substitutes.

Avoid disabling the entire plugin first. Turning off one feature gives better evidence and preserves unrelated site behavior.

Choose a resolution

Prefer, in order:

1. one feature owns the complete behavior;
2. two features remain enabled only when their scopes are demonstrably different;
3. a documented integration setting prevents the overlap;
4. supported developer hooks coordinate the behavior when the public contract allows it.

Do not rely on cache clearing, repeated saves, or plugin activation order as a permanent conflict strategy.

Verify the combined journey

For presentation changes, inspect the relevant desktop/mobile and signed-in/signed-out views. For redirects or permissions, test both allowed and denied users. For commerce, complete cart, checkout, payment, order administration, email, and refund or renewal paths that the feature can affect.

Record the winning owner and rollback switch. Then use Measure an enabled tweak to check that the accepted combination does not add unexpected work.