Some elements became too bright after replacing an incorrect path with a picture on the correct path

[MysteryPSD]

What are you trying to do, and what do you expect to happen?

I opened a Minecraft Java Edition model. I saw that I used the incorrect path to load a picture. So I clicked the "Change File" option and replace the incorrect path. Like this(before replacing):

What happens instead?

Then, I saw some elements were very bright than before in surprise. I tried again and the bug was still existed. Like this:

Model format in which the issue occurs

Java Block/Item

Blockbench variant

Program

Blockbench version

4.12.5

Operating System

macOS

Installed Blockbench plugins

They don't matter.

Are there any console errors?

I didn't notice. Actually there's always an updating(4.12.5->4.12.6, I think) failed error there.

[MysteryPSD]

However, this issue is not very dangerous because I can switch to Display mode and back to make the model normal. The issue also shows when it's in Paint mode. I noticed that the elements which didn't have textures were rendered brighter, maybe the program mistake the elements which had textures for the elements which didn't have.