kunwp1 opened a new issue, #8871:
URL: https://github.com/apache/texera/issues/8871
### What happened?
While a workflow was running, I switched to another browser tab and came
back. The execution timer in the canvas toolbar had advanced only from 0:00:31
to 0:01:53 (about 1 min 22 s), while roughly 3 minutes had passed on the system
clock (8:55 → 8:58 PM). The displayed time no longer matches the actual
execution time.
### How to reproduce?
Used 1-out UDF operator that runs for a long time to reproduce it:
```
from pytexera import *
class GenerateOperator(UDFSourceOperator):
@overrides
def produce(self) -> Iterator[Union[TupleLike, TableLike, None]]:
import time
time.sleep(10 * 60)
yield
```
<img width="1725" height="805" alt="Image"
src="https://github.com/user-attachments/assets/2ec4bdd9-119e-40b5-84c9-7ea51883b7e2";
/>
<img width="1728" height="806" alt="Image"
src="https://github.com/user-attachments/assets/43e811df-e747-4c9b-929f-f0514e270db5";
/>
### Version/Branch
1.4.0-incubating-SNAPSHOT (main)
### Commit Hash (Optional)
_No response_
### What browsers are you seeing the problem on?
_No response_
### Relevant log output
```shell
```
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