Never seen that before so the problem might just be yours.
Maybe someone has come across that and has a fix, but in the meantime can you give a few more details.
Is your monitor / display, high resolution or 4k ? - (A 'perhaps' going by the just visible tops of the icons compared with menu bar)
Did you have a previous version of Gimp installed and which versions - (installing over an existing version)(s) inherits the old settings which might not be compatible with 2.10.18)
On that last one, have you disabled (rename it) the current User Gimp profile C:\Users\"yourname"\AppData\Roaming\GIMP then restart Gimp to create a new default user profile. (Does the problem still show?)
Maybe someone has come across that and has a fix, but in the meantime can you give a few more details.
Is your monitor / display, high resolution or 4k ? - (A 'perhaps' going by the just visible tops of the icons compared with menu bar)
Did you have a previous version of Gimp installed and which versions - (installing over an existing version)(s) inherits the old settings which might not be compatible with 2.10.18)
On that last one, have you disabled (rename it) the current User Gimp profile C:\Users\"yourname"\AppData\Roaming\GIMP then restart Gimp to create a new default user profile. (Does the problem still show?)