Job preemption issue

[wide123123]

Hello, thank you for taking the time to address my issue. Could you please look at the following log? The Task_5_1 job was preempted on CPU 2, but no actual preemption occurred, and it continued to run on CPU 2. Could you explain the reason for this? Thank you very much.
[31000000, ('Task_5_1 Executing on CPU 2', True)]
[31000000, ('Task_10_2 Executing on CPU 3', True)]
[32000000, ('Task_6_2 Activated.', True)]
[32000000, ('Task_8_2 Activated.', True)]
[32000000, ('Task_2_1 Preempted! ret: 15000000', True)]
[32000000, ('Task_5_1 Preempted! ret: 7000000', True)]
[32000000, ('Task_5_1 Executing on CPU 2', True)]
[32000000, ('Task_2_1 Executing on CPU 4', True)]