In a recent revision (I am using version dated 7/6/21), when moving PCB footprints with traces, the traces lag by the initial offset. This bug has only recently appeared.
To reproduce:
1\. Add trace to a footprint\. Select both trace and footprint\.
2\. Click and drag on the component\. The trace lags the component movement by the amount of the initial movement\. While continuing dragging\, their relative positions are maintained\. If the initial drag speed is slow\, the offset is less\.
3\. Use arrow keys to start the move\. Then drag with the mouse\. The two now move together\.
The initial movement of the mouse seems to separate the trace and the footprint. Continued movement is no problem.
Chrome
86.0.4240.198
Linux
EasyEDA
6.4.20.6