ADC Values Stucking Issue on STM32L552RCT6 Microcontroller

I am experiencing an issue with the STM32 microcontroller used in a Battery Management System (BMS) application.

Issue Details:

• I am using ADC to measure Temperature using NTC and voltage.
• When a specific GPIO pin is detected as HIGH, all ADC channel values get stuck at the same reading.
• The issue is resolved only after resetting the microcontroller.
• This behaviour occurs randomly and is not consistent across all boards, making it difficult to reproduce.
• I am using FreeRTOS in the microcontroller.

Additional Information:

• The system is running FreeRTOS.
• I am using channels 5 to 16 on ADC1.
• ADC configuration: Sampling time is set to 24.5 cycles, and the mode is Single-Ended.
• A filtering circuit is connected to the GPIO to handle noise and transients.

Has anyone encountered a similar issue or could provide guidance on debugging this problem? Any advice on potential root causes or solutions would be greatly appreciated.

Thank you!