Conflict Between Optimole v4.0+ and WP Show Posts Plugin

[kushh23]

Description

After updating to Optimole v4.0 or later, a conflict occurs with the WP Show Posts plugin.
When using WP Show Posts to display a listing, if the image width and height attributes are set, the listing images appear broken on the frontend. The src attribute does not contain any image URL.

This issue does not occur with Optimole v3.14.1, where the integration works correctly without any problems.

Issue URL - https://varioustrip.s4-tastewp.com/wp-show-posts-issue/

Additional Notes

• The issue specifically occurs when custom width and height attributes are manually added.
• Tested on a clean WordPress installation with only Optimole and WP Show Posts activated.
• No errors were observed in the console; only broken images on the frontend.

Step-by-step reproduction instructions

1. Install the latest versions of Optimole and WP Show Posts plugins.
2. Create a few posts with featured images.
3. Create a listing in WP Show Posts and configure custom image width and height attributes.
4. Copy the listing shortcode and add it to a page or post.
5. View the page — the images will appear broken.
6. Roll back Optimole to v3.14.1 — the images will display correctly without issues.

Screenshots, screen recording, code snippet or Help Scout ticket

Reported by: https://secure.helpscout.net/conversation/2917512045/462870

URL: https://varioustrip.s4-tastewp.com
Username: kushnamdev
Password: ZCjNHurJQLk

Environment info

No response

Is the issue you are reporting a regression

Yes, this is a regression.

[selul]

@kushh23 I've tried to fix this here #927, can you have a look?

I've reported also the issue to the plugin owner here tomusborne/wp-show-posts#50

We fixed a bug in the most recent version which triggered this. The problem was previously present too but only in the context when the images were offloaded.

[kushh23]

@selul tested the changes, and it solves the issue. Thank you for fast response.

[kushh23]

@selul Following up on the previous findings — the user confirmed that the issue is still unresolved on their end.

After further investigation, we found that the problem occurs when using the adverts post type from the WP Adverts plugin. When this post type is used in conjunction with WP Show Posts, the image placeholders fail to load correctly.

Test Site Details:

Issue page: https://historicalmuscle.s4-tastewp.com/issue-page/
Optimole disabled version: https://historicalmuscle.s4-tastewp.com/issue-page/?optml_off=true
URL: https://historicalmuscle.s4-tastewp.com/
Username: kushnamdev
Password: _xTXIko7G4o

Steps to Reproduce:

1. Install the latest versions of Optimole, WP Adverts, and WP Show Posts plugins.
2. Create a new post under the Adverts post type and upload images.
3. In WP Show Posts, create a new listing:

• Set the post type to adverts.
• Define custom image width and height attributes.

4. Insert the listing shortcode into a page or post.
5. View the page — the image placeholders will not load.

Screenshots:

Let me know if you need any additional details to replicate this on your end.