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What are the known issues in any given Tomcat version?

To determine the known issues for any given Tomcat version, you'll need to review the following:

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What are the known issues with the Oracle JRE?

• jps.exe and jvisualvm.exe cannot detect tomcat using jdk1.6.0_23 onwards
  

I'm using the Java ImageIO to dynamically serve images and get strange Exceptions from time to time. Is this a bug in Tomcat?

Imagine you have a servlet which dynamically generates images and serves them via javax.imageio.ImageIO. To write the image to the OutputStream, perhaps you are doing something like this:

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