OS: Win10 x64 1903.
Prerequisites
I enabled on Windows the dark theme by clicking Start and then typing Color in the search field, clicking Color settings and selecting "Dark" in the "Choose your color" drop-down list.
Notes:
- The bug occurs only on the right pane tabs whether I enable dark mode in the settings whether the left pane or the right pane is active.
- After restarting Total Commander, the bug disappears.
- The bug reproduces in exactly the same manner with either of the dark mode options (1. Always enabled; 2. Only when enabled for Windows 10 apps).
Reproduction Instructions
- Enable Dark theme colors on Windows.
- Go to Configuration -> Options.
- Select "Color".
- In Dark Mode field enable dark mode by one of the options (1. Always enabled; 2. Only when enabled for Windows 10 apps).
* On the last step, if you change the dark mode selection and to disabled and enable it again (while the Options dialog box is still open), it will take effect immediately (disable - tabs are visible; enable - tabs will become invisible).
* After clicking Apply/OK, the effect remains.
* Moving between the tabs will reveal their text, but only on the active tab on the right pane.
* Closing and starting Total Commander again will make it disappear and all tabs will be visible.
Important note so you will not get baffled: in order to return to square one before reproducing the bug, you will have to have the dark mode settings (in Total Commander) set to disabled and restart TC, or else, the bug will not reoccur.
My educated guess: the fonts color is the same color as the background.