What is your operating system?
Windows 11, Lenovo ThinkPad P17, i7-11800H, 32gb ram, nvidia rtx a2000 graphics card
What is your Shotcut version (see Help > About Shotcut)?
23.12.15
Can you repeat the problem? If so, what are the steps?
Split a track, select the area you wish to speed up, change the speed (i use 5x, 10x, 15x and 20x mostly), when the track ends and the next clip begins, there’s a blip of chipmunk sound (didn’t remove audio, didn’t apply pitch compensation)