Hangfire jobs are getting stuck in processing state sometime

Tags: #<Tag:0x00007f459daae3a0> #<Tag:0x00007f459daae2d8>

Our project is using Hangfire in .net core web api project which is deployed to PCF containers. These jobs are almost processing successfully and success records getting removed from Hangfire.job table after 1 day which is expected. But some times these jobs are getting stuck in processing state. What could be reason for this? I tried testing by restarting web api PCF container, but that is not causing issue.