No sliders to select

Hello, using mxlinux 18 = debian 9 running Shotcut version 19.06.15 applmage , most seems to work but i have no sliders ! So cant select anything. Any ideas ? add a partial screenshot.
Machine quad core q9550 2.8GHz mem =14 GB memory
vid =Radeon HD 5400/6300/7300 Series

As you see no sliders

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