Tooltips miss the pattern

[arvindkumarc]

The tooltips miss the generated canvas pattern and instead shows only default color (black).

[zreese]

Same here. Even when specifiying the pattern using a tooltip callback it displays black. Makes stacked charts unusable.

[MarkHerhold]

Possibly fixed by chartjs/Chart.js#5869

[ashiguruma]

@zreese and @arvindkumarc can you confirm if the update to Chart.js has fixed the issue for yourselves?