Entering of a margin with a distance of 25 mm does't work

Hello,
i have a little problem in libreoffice writer 4.3.3.2. Every time i try to enter a margin with distance of 25 mm it is set back to 24.99 mm. The margins that i would like to enter are: left=25 mm, right=20 mm, top=45 mm, bottom=25 mm. Was that a known issue with in 4.3.3.2? Could anyone help me?

Regards,
loveless.

Still so in 5.3. However, if you select cm as unit and set the margin to 2.5 cm, it’s fine. There’s definitely something wrong here with the user interface, but remember that certain numbers can’t be exactly represented in binary numbers, and this rounding to 24.99 as the nearest representable number may be due to that.