How do I prevent ATM from completely fornicating my toolbar icons?

[AlonmifexMaximus]

See title

[AlonmifexMaximus]

Also, it completely destroys my Kerbinside/KerbalConstructs icons

[robert-cassidy]

I'm having a related problem. The overrides don't seem to work properly, and it's unclear how to establish precedence on them. The default install has a ActiveTextureManagerConfig.cfg file and an ActiveTextureManagerConfigs folder. The file has:

OVERRIDES
{
.*/Props/.*
{
    compress = true
    mipmaps = true
    scale = 1
    max_size = 0
}

.*/Flags/.*
{
    compress = true
    mipmaps = false
    scale = 1
    max_size = 0
}

.*/Agencies/.*
{
    compress = false
    mipmaps = false
    scale = 1
    max_size = 0
    make_not_readable = false
}
}

however Squad's agencies folder still seems to get compressed. The Squad file in the folder shows

OVERRIDES
{
    Squad/Agencies/.*
    {
        compress = false
        mipmaps = false
        scale = 1
        max_size = 0
        make_not_readable = false
    }
}

But again seems to be compressed. My own files sometimes work, and sometimes don't. Paths that don't have an intermediate folder seem the most problematic:

OVERRIDES {
  000_Toolbar/.* {

Won't work, but

OVERRIDES {
  MechJeb2/Icons/.* {

Usually will.