74 did make the check more robust, but didn't address the fundamental problem of usetex not being set correctly due to how matplotlib handles its internal state. triggering usetex, even inside of try cascaded to changes in other keys.
keeping the original state of rcParams and restoring it if tex fails PRIOR to setting our custom rcParams allows things to go smoothly.
74 did make the check more robust, but didn't address the fundamental problem of
usetexnot being set correctly due to how matplotlib handles its internal state. triggeringusetex, even inside oftrycascaded to changes in other keys.keeping the original state of
rcParamsand restoring it iftexfails PRIOR to setting our customrcParamsallows things to go smoothly.