Not working with LSP_USE_PLISTS=true flag

[colinet-nathan]

It is working really well but I found out that when setting the env var LSP_USE_PLISTS to true then one might encounter the following error (for pylsp):

Error processing message (wrong-type-argument hash-table-p (:jsonrpc "2.0" :id 1 :result (:capabilities (:codeActionProvider t :codeLensProvider (:resolveProvider nil) :completionProvider (:resolveProvider t :triggerCharacters ["."]) :documentFormattingProvider t :documentHighlightProvider t :documentRangeFormattingProvider t :documentSymbolProvider t :definitionProvider t :executeCommandProvider (:commands []) :hoverProvider t :referencesProvider t :renameProvider t :foldingRangeProvider t :signatureHelpProvider (:triggerCharacters ["(" "," "="]) :textDocumentSync (:change 2 :save (:includeText t) :openClose t) :workspace (:workspaceFolders (:supported t :changeNotifications t)) :experimental nil) :serverInfo (:name "pylsp" :version "1.6.0")))).

This also happens in other language servers (tested: clang,jdtls,dart-analyser).