I __think__ the change itself is low risk, but it's hard to predict whether there's no side-effect of this change or any other problems I am not aware of. In fact this bug was a long standing issue, but I had not been aware of it for years, bug 1931225 and bug 1916002 just revealed this bug. Note that for bug 1943053, even if the chat box is covered by the software keyboard, users still can scrolls to the box manually.
Bug 1943865 Comment 8 Edit History
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I __think__ the change itself is low risk, but it's hard to predict whether there's no side-effect of this change or any other problems I am not aware of. In fact this bug was a long standing issue, but I had not been aware of it for years, bug 1931225 and bug 1916002 just revealed this bug. Note that for bug 1943053, even if the chat box is covered by the software keyboard, users still can scroll to the box manually.