I can reproduce this issue.
For example, a txt file with the following line (“t” is a tab char).

ttline twot455

1> when selecting the tab char near the end of the line, the char just before the tab char will also be selected. (in the eg, “ot” will be selected)

2> the second tab from the head of the line cannot be selected. (instead, the 2 tabs will be selected together)