Bug ID 657502: JS error when leaving page opened for several minutes

Last Modified: Sep 13, 2023

Affected Product(s):
BIG-IP FPS(all modules)

Known Affected Versions:
13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3

Fixed In:
13.1.0, 13.0.1, 12.1.3

Opened: Apr 08, 2017

Severity: 3-Major

Symptoms

Google Chrome delays JS execution when the tab is not active. Therefore anti-debug module acts as if someone is trying to debug JS code.

Impact

Errors in console and JS logic is incorrectly executed.

Conditions

-- JS runs in hidden tab in Google Chrome. -- Anti-debug functionality is active. -- Page is left open for several minutes.

Workaround

Identify hidden tab and pause anti-debug functionality.

Fix Information

The system now correctly handles JS code running in a hidden tab and pauses anti-debug check.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips