Disk becomes readonly after access to many small files

[WSandwitch]

I am using Yoga book 2 laptop, and the only way to extend storage is SD card. Unfortunately disk becomes readonly after copying many files (first it happens after 400k+). Now it happens when I try to run configure for nginx build in WSL1. To reproduce:

wget https://nginx.org/download/nginx-1.24.0.tar.gz
tar -xf nginx-1.24.0.tar.gz
cd nginx-1.24.0
./configure

and after that it becomes readonly. After reboot it works well and scrub does not find any errors.