Hi, I was conducting fossil calibrated timetree construction using BEAST 2.7.6 utilizing random local clock model (tree and clock model linked, subs models unlinked). However, when I ran the MCMC chain I observed linearly increasing prior trace plot (screenshot shows only few ten-thousand generations but when I ran the analysis with approximately 1M generations, situation was almost the same).
I'm pretty sure it has to do something with the identifiability issue between substitution and clock models, but I cannot clearly see what is causing the problem. I am appending the site and clock panel of BEAUti for the reference. Thanks in advance!