animations seem to glitch?

hello, hope all are well. i was trying to import animated sprites and they seem to do this kind of glitch to where the spritesheets dont seem to align in the blue rectangles like they're supposed to, over time they seem to drift slightly to the right of the cel area and when its played back there seems to be this roll while the finished animation was playing. i hope im explaing this correctly but basically the animated sprites, while the animations themselves play fine, there is some kind of effect similar to what looks like the horizontal roll on an old analog tv that goes along with it. thanks for your time, hope all have a nice evening.