Problems with tablature flags

In the nightlies there are some redraw problems with tablature flags (note lenght signs). Often a piece of these flags are missing, sometimes the whole flag.

The headless French Baroque flags are missing the 64th.

It would be good to have the possibility to change colour and position of single flags, so that a tablature like in the capirola lutebook would be possible. Currently the flags seem to be the only signs that cannot be changed that way.