Is this normal?

This maybe a silly question.

But, I was showing my sister in law all my positive test that I’ve taken lately because I just couldn’t believe that the first two I took were positive. I took them all out of the baggy I had put them in & on one of the test the second line disappeared. I’m not sure if this test was a evap or what, but I thought it was super weird & wanted to know if that is normal for a test to do after so long?

First picture below is all the test I took saying positive.

Second picture below is the test that I took out of the baggy & the one line is gone.