[grids] at fine grain levels higher then 16 map does not render

[gdey]

We are seeing issues where at fine levels maps don't always render. Not sure why.

[gdey]

Here is a bounds that does not render:

LOWER LEFT
-122.17386, 48.065492
UPPER RIGHT
-122.17291, 48.066044

Job:
CgNncmcSvgEKDAoKVjc5MUcxNTgwMhIKDRBDQEIVBFn0whoKDaFDQEIViFj0wiIKDaYX90EVTp+lQSoNVW5pdGVkIFN0YXRlczoCCApCGgoQR0VPSU5UX1BST0RfUExBThIGCIDLitoFUgwI8evj8wUQvP6c4wJaNAoIZmlsZW5hbWUSKDA2Y2UzNDk2M2M4NmY1ZDg5ZmEyNjRmODAxODM2ZDExZDExYzA3MGZiClY3OTFYMTU4MDJqBTE1ODAycgRWNzkx
grg_1b771daf626ee7f22718a6e8695978dec38bb916.pdf

[gdey]

Here is another bounds:
LOWER LEFT
-71.055602, 42.350778
UPPER RIGHT
-71.054842, 42.351229
Job:
-71.0CgNncmcSrwEKDAoKVjcxNEc2MTY4MRIKDTJnKUIVeByOwhoKDalnKUIVFByOwiIKDTnY9kEVyBi3QToCCBNCGgoQR0VPSU5UX1BST0RfUExBThIGCICZiOMFUgwIlu7j8wUQtI20twFaNAoIZmlsZW5hbWUSKDYwOWQxYzUxMTUyODUzNzc2ZWIxOGIxY2RmNmMxNTM4ODFkYzhkNTliClY3MTRYNjE2ODFqBTYxNjgxcgRWNzE0

grg_a5b0b7047c994fbff4e3206b39d1ad8c3e022104.pdf