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Two changes to prevent unlimited parallel background work: - ChangesService: cancel any running collection task before queuing a new one (via ProgressIndicator), and add a generation counter so queued-but-not-yet-started tasks drop out immediately when superseded - MyLineStatusTrackerImpl: replace unbounded executeOnPooledThread with a SequentialTaskExecutor + generation counter, so at most one gutter update runs at a time and stale queued updates are dropped instantly
project.getService() on EDT triggers lazy service initialization which loads project config, invoking all registered path macro contributors including Maven's, which does blocking I/O forbidden on EDT. Fix: initialize all services on a background thread first, then switch to EDT for initDependencies(). By that point getService() returns cached instances without going through the config loading chain.
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