Table control in Travel Manager (PR05) does not save changes

Hi experts,

we person a unusual behaviour successful transaction PR05. No substance successful which array we privation to show/hide columns via the array control, the changes won't beryllium saved. Also if we make caller variants, emblem them arsenic "Standard Variant", the changes wont beryllium saved. It ever goes backmost to the "Standard Settings". Any idea, what could beryllium wrong?

I attached a file, wherever you tin spot what precisely I'm talking about. The contented occurs connected each tables we privation to alteration successful PR05.