Library issue before latest update

Since the new update, all my personal and installed libraries won’t work at all. I am trying to solve this problem searching thru all the Community and found nothing. Before the actualization, was everything ok, but not anymore.

All works fine except when I add the new library on the respective folders SRC for .C and INCLUDE for .H filetypes, and including on my project (#include), all the functions called on the main code arent recognized generating the following compile error:

app_main.c:332: undefined reference to `called function example’
collect2.exe: error: ld returned 1 exit status
*** [.pio\build\esp32doit-devkit-v1\firmware.elf] Error 1

Is someone having the same issue? Can someone help me? I am even thinking about downgrade Platformio.

I take it this is on the ESP32… which framework though? Arduino or ESPIDF? Does a simple LED blink program compile without issue? Have you checked if your platform/framework versions are up-to-date (unless you need to use a specific version)?