Have been using staging release 1084 for some time and everything was ok. Started to use SPIFFS and it brought us some really nice features like storing configuration files and css.

But just today I've tried out the latest staging release (1106) and now I get this message:

Sketch too big; see http://www.arduino.cc/en/Guide/Troubleshooting#size for tips on reducing it.

Compile size on two different staging releases with the same sketch:
1084 - 408372
1106 - 445480

That's a large increase (37k). Same sketch, no extra includes. It runs fine on our dev boards with ESP12E modules on it, but it would kill our project for all those 512kB ESP users.

Can anyone explain the sudden 37k gain? Is there some workaround?