Indeed I came here to report exactly this bug - we're blessed with a version not from 2013 anymore.
0.6: git 6877678 is available, and seems to work fine when compiled for debian 12. Gives a new ShmS field, and a couple of totals values up top (Pixmaps and All) seem to change by a factor of 100, but none of the values (old or new) seem sensicle, which I'm yet to get to the bottom of: 0.4: xrestop - Display: localhost Monitoring 424 clients. XErrors: 1 Pixmaps: 180143985090102 total, Other: 4447K total, All: 180143985090147 total 0.6: xrestop - Display: localhost:0 Monitoring 424 clients. XErrors: 5 Pixmaps: 18014398509010292K total, Other: 4447K total, All: 18014398509014739K total (although it would explain why I'm having troubles that is causing me to dig out xrestop to troubleshoot) -- Tim Connors