Compatibility with Custom Plugin Folder

I have two wordpress sites in different subfolders of my homepage (e.g., example.com/news/ and example.com/blog/). I use Custom Plugin Folder setting in my wp-config.php, and use the same plugin url and path for these two sites (e.g., example.com/plugins/). I use W3-Total-Cache on these two sites, but repeatedly the W3TC plugin redirect cached pages to use wrong url, e.g.:

• RIGHT URL: https://example.com/blog/2015/02/19/post-slug
• MISTAKENLY REDIRECTED TO: https://example.com/news/2015/02/19/post-slug

It seems that W3TC plugin mistakenly detects the homepage url of each site, and use the latest cached homepage url to be combined with the url of a webpage/post. How do I solve the problem? Is there any possibility to do hardcoding in the plugin to solve it?

https://www.ads-software.com/plugins/w3-total-cache/