The road to hell is paved with good intentions.

If you use a repair module on a capital ship with its shields down, the shield timer resets. So, a well-meaning teammate or clever foe can keep your shields down far longer than they should be (or indefinitely) without doing any damage to the ship.

Might be related to a similar 2020 bug that I believe was fixed.

This has now been patched in production, thanks for the report.

Woo +1