lvgl: The roller is not aligned in some cases

Describe the bug

The roller is not aligned: first drag the roller, then click on another object when the roller has not stopped scrolling. At this time the roller may be misaligned.

To Reproduce

I run example the lv_test_roller_1() in lv_examples/lv_tests/lv_test_objx/lv_test_roller, then scroll roller3 and quickly click on roller2.

Expected behavior

When the roller is scrolling, click on other objects, the roller is still aligned.

Screenshots

Additional context