[Plugin: RB Internal Links] Links disappear in excerpts

Hello
I am using the plugin with great satisfaction but just discovered an annoying problem: links done using the plugin completely disappear from the pages excerpts. I mean, not just the URL link is not present, but even the link text is skipped! Is it me? (I am using several other plugins….)

https://www.ads-software.com/extend/plugins/rb-internal-links/