Possibly related bugs:
- Issue 173844: Developer tools (Network section) don't show response of requests from flash applications
- Issue 335502: XMLHttpRequests from Silverlight is not visible in devtools network tab
To avoid the bug, you could downgrade to Chrome 31. A fully offline installer can be downloaded from http://download.oldapps.com/Chrome/31.0.1650.39_chrome_installer.exe.
If you downgrade Chrome, don't forget to disable auto-update. Also, "star" the relevant issues on Chromium's issue tracker so you'll receive email notifications for progress updates. When the issue is fixed, enable auto-update again.
Often, starting a new version of Chrome renders a profile unusable for older Chrome versions ("Your profile can not be used because it is from a newer version of Google Chrome."). When you see such message on start-up, either delete your old profile (don't forget to make a back-up!) (you can also try to delete some files, according to various users, deleting "Web Data" and "Web Data-journal" is sufficient), or launch Chrome with a new profile directory (--user-data-dir=path\to\profile-dir
).
For more information on user profiles, see http://www.chromium.org/user-experience/user-data-directory.