2.0.4 Image size bug

In Legacy Builder if I try typing the size of the image of 50%, it either automatically chooses 10 or 100. I cannot type 50 and get 50 I get 10
https://1drv.ms/v/c/95d9b88a8f9a0116/EXoHzQFkLKBNinfu-tJLWPMBlL2KEIXn3o_d3DMyIA0yUA?e=VEtt02

In the New Builder it works like it should