FULL PRODUCT VERSION :
1.8.0_121-b13, Oracle Corporation, Java HotSpot(TM) Client VM

ADDITIONAL OS VERSION INFORMATION :
Windows 7 64-Bit

A DESCRIPTION OF THE PROBLEM :
This is an upstream bugreport for
https://josm.openstreetmap.de/ticket/14411

One of our users faced the following exception:

java.io.IOException: Problem reading font data.
at java.awt.Font.createFont0(Unknown Source)
at java.awt.Font.createFont(Unknown Source)

We can see in Font source code that the root cause is swallowed, giving us no hint about what's wrong:

        try {
            ...
        } catch (Throwable t) {
            ...
            throw new IOException("Problem reading font data.");
        }

The code should be updated to:

   throw new IOException("Problem reading font data.", t);

As per Quality Outreach, can you please add label josm-found to this bug report?


ERROR MESSAGES/STACK TRACES THAT OCCUR :
java.io.IOException: Problem reading font data.
at java.awt.Font.createFont0(Unknown Source)
at java.awt.Font.createFont(Unknown Source)

REPRODUCIBILITY :
This bug can be reproduced rarely.

CUSTOMER SUBMITTED WORKAROUND :
Patching Font