When creating a custom diagram of license usage in tlwebadm one may insert an arbitrary number of days of which to plot. While a reasonably small number of days are working as intended, such as up to 1000 days, at some point between 9000 and 10000 the x-axis becomes unreadable. Beyond that point, it just seems to be buggy as the table below illustrates. Could observe the same behavior in 4.14 and the latest build. Ultimately, since users are most likely not interested in time intervals beyond a couple of years, perhaps the simplest solution is to set a maximum of 9000 days (~24 years) -- the precipice at which the current method of plotting starts breaking down. days | results -------|-------- 10^1 | ✅ 10^2 | ✅ 10^3 | ✅ 10^4 | unreadable years 10^5 | unreadable months 10^6 | switches to contemporary years 10^7 | adds more years to contemporary years 10^8 | no graph produced 10^9 | no graph produced 10^10 | no graph produced 10^11 | no graph produced 10^12 | no graph produced 10^13 | switches to contemporary years 10^14 | adds more years to contemporary years 10^15+ | no graph produced