Reimporting a second time no longer updates the font in the editor.

[Torguen]

Tested versions

v4.3.dev5.official [89f70e9]

System information

w10 64

Issue description

I have imported a font bmp image as Font Data.

When you alter the margins for the first time and reimport the data, the source updates its display in the editor, when you alter the margins for the second time and reimport again, the source no longer updates its display even though the changes have been applied.

To see the changes you will have to restart the editor, but the same thing will happen again... very annoying.

Video:
https://youtu.be/xGNuigqJrRs

Steps to reproduce

Apply some change to the font that makes it look different, some margin or something like that.
Reimport.
The changes are reflected in the editor.
Apply a change again.
Reimport.
The changes are no longer reflected.

Minimal reproduction project (MRP)

testfontReimport.zip