Slide notes etc. guitar tablature

I've been struggling with writing guitar tablature because many techniques like slides don't have designated buttons. I've been using lines to attempt to work around this, but they don't look very clean or readable, crossing over the barlines in an ugly way.

This was a problem in Musecore 3, and I was hoping it was going to be fixed in Musecore 4, but it hasn't yet--so I hope the devs integrate more guitar technique tablature soon.