tiles flicker

[Klumbumbus]

When new tiles are downloaded they flicker for a while. See gif record. (In real the flickering is faster, but this is not captured by the gif.)

Also I think the red cross previously was only displayed, if there was an download error and not for tiles, which are not yet downloaded. This was much more friendly.

Revision: 8175
Repository Root: http://josm.openstreetmap.de/svn
Relative URL: ^/trunk
Last Changed Author: stoecker
Last Changed Date: 2015-04-07 10:18:15 +0200 (Tue, 07 Apr 2015)
Build-Date: 2015-04-07 08:40:02
URL: http://josm.openstreetmap.de/svn/trunk
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last Changed Rev: 8175

Identification: JOSM/1.5 (8175 de) Windows 7 32-Bit
Memory Usage: 671 MB / 742 MB (228 MB allocated, but free)
Java version: 1.8.0_31, Oracle Corporation, Java HotSpot(TM) Client VM
VM arguments: [-Djava.security.manager, -Djava.security.policy=file:C:\Program Files\Java\jre1.8.0_31\lib\security\javaws.policy, -DtrustProxy=true, -Djnlpx.home=<java.home>\bin, -Djnlpx.origFilenameArg=C:\Program Files\josm-latest.jnlp, -Djnlpx.remove=true, -Djava.util.Arrays.useLegacyMergeSort=true, -Djnlpx.heapsize=256m,768m, -Djnlpx.splashport=60630, -Djnlpx.jvm=<java.home>\bin\javaw.exe, -Djnlpx.vmargs=LURqYXZhLnV0aWwuQXJyYXlzLnVzZUxlZ2FjeU1lcmdlU29ydD10cnVlAA==]
Program arguments: [--debug]
Dataset consistency test: No problems found

Plugins:
- DirectDownload (30892)
- DirectUpload (30892)
- HouseNumberTaggingTool (30892)
- OpeningHoursEditor (30962)
- PicLayer (30962)
- RoadSigns (30977)
- Tracer2 (30984)
- buildings_tools (30955)
- download_along (30892)
- editgpx (30892)
- imagery_offset_db (31056)
- measurement (30892)
- mirrored_download (30962)
- photo_geotagging (30967)
- photoadjust (30964)
- public_transport (30892)
- reltoolbox (31056)
- reverter (30990)
- tag2link (31066)
- terracer (30892)
- turnrestrictions (31034)
- undelete (30892)
- utilsplugin2 (31072)
- wikipedia (31035)

Last errors/warnings:
- E: Defekte Objektvorlage "bla-Type" - Anzahl der Datenworte in 'display_values' und in 'values' müssen gleich sein
- W: JCS TMS Cache - error creating URL for tile 15/17550/11011@Bing Aerial Maps: Attribution is not loaded yet
- W: No url returned for: 15/17550/11011@Bing Aerial Maps, skipping
- E: Skipping to the next rule, because of an error:
- E: org.openstreetmap.josm.gui.mappaint.mapcss.parsergen.ParseException: Encountered " <REGEX> "/^addr:/ "" at line 10, column 5.