DI_FIXEDIT problems

[ssvine]

Far Manager version

3.0.6334.0

OS version

10.0.19045.4412

Other software

No response

Steps to reproduce

Prepare:

1. Start Far without plugins/macros and console emulators
2. F9 => Options => Viewer settings
3. Focus to Maximum line width edit box. It is DI_FIXEDIT + DIF_MASKEDIT with mask #99999 and width = 6

1st problem (related to DIF_MASKEDIT):

1. With the help of left/rigth arrow keys it is possible to enter values like 10 2 3 (for the mask #99999)

2nd problem:

1. Selection expands out of the edit box (press Ctrl-A, then press left/right arrows and see how overflown portion of the selection doesn't disappear)

3rd problem:

1. Sometimes navigating with right arrow doesn't stop at the end but proceeds past the end, where it shows garbage. To reproduce, use Release version and reopen Viewer settings if the bug does not manifest itself.

The following animated gif shows all the problems at once. (At the end I press Backspace, that fills deleted characters with 8 instead of space, but it seems to be related to the 3rd problem.)

Expected behavior

No response

Actual behavior

Actual behaviour is shown in the animated gif above.