but the testimonials slider works fine on its own page, suggesting setting a different text limit means you have an issue with the plugin itself, it should be able to handle that. but it works fine on the interior page it suggests something wrong on the homepage.
i see now the issue was there on the other page, it just looked better because it was your demo. I ended up going with another plugin for testimonials. you might want to improve that its a silly layout and restriction really.