Fix task manager size when spacing is set to large
By applying the 3x margins on "large" spacing to both horizontal and vertical margins, you're also compressing the icon to be too small; this probably triggers the min size check, which gives back some margin (that are, at this point, inconsistent). With this patch, switching to "large" whilst the panel is at 38px shouldn't change the size of the icon.
Edited by Niccolò Venerandi