RetainerBox may cause memory leak

Essentially, this memory leak should be counted in the UI section, but it is counted in the SceneRender section.
This seems to be due to the behavior of MemStackAllocator and FixedSizeAllocator.

The following workaround solves this problem. (Probably not a suitable solution)

void FSlateBatchData::MergeRenderBatches()
{
	SCOPE_CYCLE_COUNTER(STAT_SlateRTCreateBatches);

	if(RenderBatches.Num())
	{
//		TArray<TPair<int32, int32>, TInlineAllocator<100, TMemStackAllocator<>>> BatchIndices;
		TArray<TPair<int32, int32>, TInlineAllocator<100> > BatchIndices;

		{
			SCOPED_NAMED_EVENT_TEXT("Slate::SortRenderBatches", FColor::Magenta);

1. Open attached project on 4.25.3 engine [Link Removed]
2. Build package for win64
3. Launch the packaged game with -LLM command-line option
4. After launching the game, enter "stat LLMFULL" console command
5. see stats

Result

SceneRender section in stats keeps increasing

[Link Removed]