From the production logs:
starting parsing of enwiki:Luis_D._Ortiz
starting parsing of zhwiki:毛西番蓮
http://10.2.2.29/enwiki/Luis_D._Ortiz?oldid=560778411
No cache hit for Luis_D._Ortiz
http://10.2.2.29/zhwiki/毛西番蓮?oldid=26914214
No cache hit for 毛西番蓮
/srv/deployment/parsoid/Parsoid/js/lib/ext.core.TemplateHandler.js:599
dp.tagWidths = [matchInfo[1].length,matchInfo[2].length]; ^
TypeError: Cannot read property '1' of null
at TemplateHandler._startTokenPipeline.pipelineOpts.isInclude (/srv/deployment/parsoid/Parsoid/js/lib/ext.core.TemplateHandler.js:599:31) at TemplateHandler._onChunk (/srv/deployment/parsoid/Parsoid/js/lib/ext.core.TemplateHandler.js:772:2) at TemplateHandler._startTokenPipeline (/srv/deployment/parsoid/Parsoid/js/lib/ext.core.TemplateHandler.js:589:8) at ApiRequest._processListeners.processSome (/srv/deployment/parsoid/Parsoid/js/lib/mediawiki.ApiRequest.js:99:17) at process.startup.processNextTick.process._tickCallback (node.js:244:9)
worker 16497 died (1), restarting.
Version: unspecified
Severity: normal