Query parameter breaks homepage

Hi, I recently discovered an issue on my site, and turns out the Connections plugin is the culprit, so reaching out to see if 1) this is intended behavior, and 2) how to resolve.

My wordpress homepage is set to use a page, which renders using page.php in the theme as expected. However, when the query parameter “a” is added to the URL (eg. /?a=1), the homepage seems to fall back to using index.php.

Connections plugin seems to be the cause, since disabling this plugin resolves the issue (homepage renders correctly).

Does Connections register/handle any special query parameters, like “a=”? Where can we see this list, and how should I resolve this issue? Thanks very much