espressif32: incorrect offset calculation for spiffs

[EFeru]

Apparently if the Offset is left blank in partitions.csv, Platformio does not calculate corectly the offset making the ESP32 spiffs not possible to mount.

My platformio.ini

[env]
platform = espressif32@6.3.2
board = esp32dev
framework = espidf
platform_packages = framework-espidf
upload_speed = 921600
monitor_speed = 115200
monitor_raw = true
board_build.partitions = partitions.csv

partitions.csv

# Name,   Type, SubType, Offset, Size,    Flags
nvs,      data, nvs,     0x9000, 0x6000,
phy_init, data, phy,     0xf000, 0x1000,
factory,  app,  factory,       , 1500K,
storage,  data, spiffs,        , 2M,

Platformio decides to write to

Flash will be erased from 0x00190000 to 0x0038ffff...

However,

> hex(0xf000+0x1000 + (1500*1024))
0x187000

So, if I explicitly specify the offset, i.e.,:

# Name,   Type, SubType, Offset, Size,    Flags
nvs,      data, nvs,     0x9000, 0x6000,
phy_init, data, phy,     0xf000, 0x1000,
factory,  app,  factory,       , 1500K,
storage,  data, spiffs,  0x187000, 2M,

Then the spifss mounts successfuly. See more details on this topic at this link:
https://community.platformio.org/t/esp32-esp-idf-cannot-increase-spifss-and-app-memory/35496/7

Edit: I am not sure if there is an issue also for other offset calculations. Maybe is good to double check. Thanks for your efforts!