How to export different sizes but deactivate suffix

Hi,

i'm using the "Export as" function pretty often and in my case i need to export in two different sizes:

1 and 0,5

1 should add 2x at the end of the filename
0,5 should leave filename as is

for example:

original file: xxx.jpg

size 1:      xxx2x.jpg
size 0,5:   xxx.jpg

My Co-worker does the same an just leaves the suffix naming space empty and it works.
But on my PS CC the files look like this:

size 1:      xxx2x.jpg

size 0,5:   xxx@0,5x.jpg

do i miss something?
help would be really appreciated

Thanks

Alan