Not possible to remove -fno-rtti from build flags

[InventoCasa]

Operating system:
Windows 10, using Atom with PlatformIO Package.

PlatformIO Version (platformio --version):
3.5.3

Description of problem

I tried every information found in the platformio docs to remove the build flag '-fno-rtti' from the build process, because I want to use the typeid() operator of C++.
However, it seems to compile with the flag every time, regardless of what I do.

Compiler output:

error: cannot use typeid with -fno-rtti
Serial.printf(typeid(test).name());

The content of platformio.ini:

[env:nodemcuv2]
platform = espressif8266
board = nodemcuv2
framework = arduino
upload_port = COM11
upload_speed = 921600
build_unflags = -fno-rtti

[ivankravets]

Please re-test with pio upgrade --dev.