LM Studio version: 0.4.23 (Build 1)
Platform: macOS
Description:
Enabling Developer Mode causes the visible model selector in the Chat composer to disappear. Disabling Developer Mode immediately restores it.
The model picker itself remains functional via Cmd+L, so this appears to be a UI/display issue rather than a problem with model loading.
Steps to reproduce:
Open LM Studio and go to Chat.
With Developer Mode disabled, observe that the model selector is visible in the chat composer.
Enable Developer Mode.
Return to Chat.
The model selector is no longer visible.
Press Cmd+L: the model picker still opens normally.
Disable Developer Mode: the model selector reappears.
Expected behavior:
The currently selected model/model selector should remain visible when Developer Mode is enabled.
Actual behavior:
Developer Mode hides the model selector from the Chat composer.
Workaround:
Disable Developer Mode, or use Cmd+L to access the model picker.

Debug mode off

Debug mode on
LM Studio version: 0.4.23 (Build 1)
Platform: macOS
Description:
Enabling Developer Mode causes the visible model selector in the Chat composer to disappear. Disabling Developer Mode immediately restores it.
The model picker itself remains functional via Cmd+L, so this appears to be a UI/display issue rather than a problem with model loading.
Steps to reproduce:
Open LM Studio and go to Chat.
With Developer Mode disabled, observe that the model selector is visible in the chat composer.
Enable Developer Mode.
Return to Chat.
The model selector is no longer visible.
Press Cmd+L: the model picker still opens normally.
Disable Developer Mode: the model selector reappears.
Expected behavior:
The currently selected model/model selector should remain visible when Developer Mode is enabled.
Actual behavior:
Developer Mode hides the model selector from the Chat composer.
Workaround:
Disable Developer Mode, or use Cmd+L to access the model picker.