I’m suddenly getting totally blank pages (save for Constellation in the bottom left corner), semi-randomly. The only packages I changed were:
accounts-base (from 1.2.11 to 1.2.12_1
mongo (from 1.1.12_1 to 1.1.12_3)
No errors on either client side or server side. Once I revert to the previous versions of these packages, everything is perfect.