I have a problem with glissando in Musescore 3.6

The sound of the glissando, portamento style is broken Because the sound at the end of a downward gliss with range greater than an octave will glitch, it sounds like a very high pitched tone. If the range increases, the glitch will get even more obvious. Also, at the end of any portamento glissando, there's a note that sounds like a pizzicato with pitch equals to the pitch of the first note of the gliss. Do you think you can help with that? Many thanks.