Show text longer than sound with UDialogueWave?

Hi,

I am using UDialogueWaves for our ingame cutscenes. I added subtitles to the text. But sometimes a weird problem happens. The text appears only for a second and then disappears even if the sound is still playing. It seems to appear at random with no real pattern to reproduce. Is there a way to tell the game to show the subtitles longer than the sound? For example when one of the characters says something and the cutscene ends and I don’t want the text to disappear before the player presses a certain key?

Cheers