==19383==ERROR: LeakSanitizer: detected memory leaks
  Direct leak of 48 byte(s) in 2 object(s) allocated from:
        #0 0x7f26aec7ae48 in __interceptor_malloc (/usr/lib64/libasan.so.
5+0x109e48)
        #1 0x7f26a8bcbc50  (/usr/lib64/libfontconfig.so.1+0xbc50)
        #2 0x3d4c4c415f434bff  (<unknown module>)

I've seen this one before. I suspect certain versions of fontconfig have an internal memory leak. For me, it fixed itself after an upgrade of some packages. Can we install debug symbols for fontconfig on the respective platforms? Then we could see a proper stack trace.

best regards,
Ulf
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