Delay before a specific windowrule is applied

[Kommynct]

in regards to #10012 (comment)

For the thunderbird not assigning title situation, what if there was a way to delay a windowrule, so that they don't have to be dynamic, but don't happen on spawn instantly, for niche cases where the client is shit like this?

[vaxerski]

not possible due to how it's coded :/