I have had this happen with a variety of cheap uSD cards. Using better quality brands (e.g. Sandisk), it has not been an issue. Are they off-brand, discount or gray market cards?
The four micro SD cards that I have in front of me are as follows:
32 GB (4) PNY, 16 GB (4) SanDisk, 8 GB (2) SanDisk, and 2 GB (?) Lexar.
I have seen other people mention that the (4)'s are better than the (2)'s, but even then the cards do the same thing.